Index: t3lib/class.t3lib_beuserauth.php
===================================================================
--- t3lib/class.t3lib_beuserauth.php	(Revision 9067)
+++ t3lib/class.t3lib_beuserauth.php	(Arbeitskopie)
@@ -214,12 +214,10 @@
 					$this->backendSetUC();		// Setting the UC array. It's needed with fetchGroupData first, due to default/overriding of values.
 					$this->emailAtLogin();		// email at login - if option set.
 				} else {
-					t3lib_BEfunc::typo3PrintError ('Login-error','TYPO3 is in maintenance mode at the moment. Only administrators are allowed access.',0);
-					exit;
+					throw new RuntimeError('Login Error: TYPO3 is in maintenance mode at the moment. Only administrators are allowed access.');
 				}
 			} else {
-				t3lib_BEfunc::typo3PrintError ('Login-error','IP locking prevented you from being authorized. Can\'t proceed, sorry.',0);
-				exit;
+				throw new RuntimeError('Login-error: IP locking prevented you from being authorized. Can\'t proceed, sorry.');
 			}
 		}
 	}
Index: t3lib/class.t3lib_treeview.php
===================================================================
--- t3lib/class.t3lib_treeview.php	(Revision 9067)
+++ t3lib/class.t3lib_treeview.php	(Arbeitskopie)
@@ -772,9 +772,8 @@
 
 			$newID = $row['uid'];
 
-			if ($newID==0)	{
-				t3lib_BEfunc::typo3PrintError ('Endless recursion detected', 'TYPO3 has detected an error in the database. Please fix it manually (e.g. using phpMyAdmin) and change the UID of '.$this->table.':0 to a new value.<br /><br />See <a href="http://bugs.typo3.org/view.php?id=3495" target="_blank">bugs.typo3.org/view.php?id=3495</a> to get more information about a possible cause.',0);
-				exit;
+			if ($newID == 0) {
+				throw new RuntimeException('Endless recursion detected: TYPO3 has detected an error in the database. Please fix it manually (e.g. using phpMyAdmin) and change the UID of '.$this->table.':0 to a new value.<br /><br />See <a href="http://bugs.typo3.org/view.php?id=3495" target="_blank">bugs.typo3.org/view.php?id=3495</a> to get more information about a possible cause.');
 			}
 
 			$this->tree[]=array();		// Reserve space.
Index: t3lib/error/class.t3lib_error_productionexceptionhandler.php
===================================================================
--- t3lib/error/class.t3lib_error_productionexceptionhandler.php	(Revision 9067)
+++ t3lib/error/class.t3lib_error_productionexceptionhandler.php	(Arbeitskopie)
@@ -55,8 +55,8 @@
 			header("HTTP/1.1 500 Internal Server Error");
 		}
 		$this->writeLogEntries($exception,self::CONTEXT_WEB);
-
-		t3lib_timeTrack::debug_typo3PrintError(get_class($exception), $exception->getMessage(), 0, t3lib_div::getIndpEnv('TYPO3_SITE_URL'));
+		$messageObj = t3lib_div::makeInstance('t3lib_message_ErrorPageMessage', $exception->getMessage(), get_class($exception));
+		$messageObj->output();
 	}
 
 	/**
Index: t3lib/class.t3lib_userauthgroup.php
===================================================================
--- t3lib/class.t3lib_userauthgroup.php	(Revision 9067)
+++ t3lib/class.t3lib_userauthgroup.php	(Arbeitskopie)
@@ -267,9 +267,8 @@
 				}
 			}
 		}
-		if ($exitOnError)	{
-			t3lib_BEfunc::typo3PrintError ('Access Error','This page is not within your DB-mounts',0);
-			exit;
+		if ($exitOnError) {
+			throw new RuntimeException('Access Error: This page is not within your DB-mounts');
 		}
 	}
 
@@ -282,9 +281,8 @@
 	 */
 	function modAccess($conf,$exitOnError)	{
 		if (!t3lib_BEfunc::isModuleSetInTBE_MODULES($conf['name']))	{
-			if ($exitOnError)	{
-				t3lib_BEfunc::typo3PrintError ('Fatal Error','This module "'.$conf['name'].'" is not enabled in TBE_MODULES',0);
-				exit;
+			if ($exitOnError) {
+				throw new RuntimeException('Fatal Error: This module "'.$conf['name'].'" is not enabled in TBE_MODULES');
 			}
 			return FALSE;
 		}
@@ -296,9 +294,8 @@
 				($this->workspace>0 && t3lib_div::inList($conf['workspaces'],'custom')))	{
 					// ok, go on...
 			} else {
-				if ($exitOnError)	{
-					t3lib_BEfunc::typo3PrintError ('Workspace Error','This module "'.$conf['name'].'" is not available under the current workspace',0);
-					exit;
+				if ($exitOnError) {
+					throw new RuntimeException('Workspace Error: This module "'.$conf['name'].'" is not available under the current workspace');
 				}
 				return FALSE;
 			}
@@ -312,9 +309,10 @@
 			$acs = $this->check('modules',$conf['name']);
 		}
 		if (!$acs && $exitOnError)	{
-			t3lib_BEfunc::typo3PrintError ('Access Error','You don\'t have access to this module.',0);
-			exit;
-		} else return $acs;
+			throw new RuntimeException('Access Error: You don\'t have access to this module.');
+		} else {
+			return $acs;
+		}
 	}
 
 	/**
Index: typo3/file_list.php
===================================================================
--- typo3/file_list.php	(Revision 9067)
+++ typo3/file_list.php	(Arbeitskopie)
@@ -46,6 +46,6 @@
 } else {
 	$title = sprintf($GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_core.xml:extension.not.installed'), 'list');
 	$message = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_core.xml:link.to.filelist.correctly');
-	t3lib_BEfunc::typo3PrintError($title, $message);
+	throw new RuntimeException($title . ': ' . $message);
 }
 ?>
\ No newline at end of file
Index: typo3/index.php
===================================================================
--- typo3/index.php	(Revision 9067)
+++ typo3/index.php	(Arbeitskopie)
@@ -366,8 +366,7 @@
 				if ($this->commandLI=='setCookie') {
 						// we tried it a second time but still no cookie
 						// 26/4 2005: This does not work anymore, because the saving of challenge values in $_SESSION means the system will act as if the password was wrong.
-					t3lib_BEfunc::typo3PrintError ('Login-error',"Yeah, that's a classic. No cookies, no TYPO3.<br /><br />Please accept cookies from TYPO3 - otherwise you'll not be able to use the system.",0);
-					exit;
+					throw new RuntimeException('Login-error: Yeah, that\'s a classic. No cookies, no TYPO3.<br /><br />Please accept cookies from TYPO3 - otherwise you\'ll not be able to use the system.');
 				} else {
 						// try it once again - that might be needed for auto login
 					$this->redirectToURL = 'index.php?commandLI=setCookie';
Index: typo3/wizard_forms.php
===================================================================
--- typo3/wizard_forms.php	(Revision 9067)
+++ typo3/wizard_forms.php	(Arbeitskopie)
@@ -316,9 +316,8 @@
 
 			// First, check the references by selecting the record:
 		$row = t3lib_BEfunc::getRecord($this->P['table'],$this->P['uid']);
-		if (!is_array($row))	{
-			t3lib_BEfunc::typo3PrintError ('Wizard Error','No reference to record',0);
-			exit;
+		if (!is_array($row)) {
+			throw new RuntimeException('Wizard Error: No reference to record');
 		}
 
 			// This will get the content of the form configuration code field to us - possibly cleaned up, saved to database etc. if the form has been submitted in the meantime.
Index: typo3/file_rename.php
===================================================================
--- typo3/file_rename.php	(Revision 9067)
+++ typo3/file_rename.php	(Arbeitskopie)
@@ -121,9 +121,10 @@
 			$this->target='';
 		}
 		$key=$this->basicff->checkPathAgainstMounts($this->target.'/');
-		if (!$this->target || !$key)	{
-			t3lib_BEfunc::typo3PrintError ($GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', true), $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', true), '');
-			exit;
+		if (!$this->target || !$key) {
+			$title = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', TRUE);
+			$message = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', TRUE);
+			throw new RuntimeException($title . ': ' . $message);
 		}
 
 			// Finding the icon
Index: typo3/wizard_table.php
===================================================================
--- typo3/wizard_table.php	(Revision 9067)
+++ typo3/wizard_table.php	(Arbeitskopie)
@@ -235,9 +235,8 @@
 
 			// First, check the references by selecting the record:
 		$row = t3lib_BEfunc::getRecord($this->P['table'],$this->P['uid']);
-		if (!is_array($row))	{
-			t3lib_BEfunc::typo3PrintError ('Wizard Error','No reference to record',0);
-			exit;
+		if (!is_array($row)) {
+			throw new RuntimeException('Wizard Error: No reference to record');
 		}
 
 			// This will get the content of the form configuration code field to us - possibly cleaned up, saved to database etc. if the form has been submitted in the meantime.
Index: typo3/file_edit.php
===================================================================
--- typo3/file_edit.php	(Revision 9067)
+++ typo3/file_edit.php	(Arbeitskopie)
@@ -110,9 +110,10 @@
 			$this->target='';
 		}
 		$key=$this->basicff->checkPathAgainstMounts($this->target.'/');
-		if (!$this->target || !$key)	{
-			t3lib_BEfunc::typo3PrintError($GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', true), $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', true), '');
-			exit;
+		if (!$this->target || !$key) {
+			$title = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', TRUE);
+			$message = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', TRUE);
+			throw new RuntimeException($title . ': ' . $message);
 		}
 			// Finding the icon
 		switch($GLOBALS['FILEMOUNTS'][$key]['type'])	{
Index: typo3/file_newfolder.php
===================================================================
--- typo3/file_newfolder.php	(Revision 9067)
+++ typo3/file_newfolder.php	(Arbeitskopie)
@@ -133,9 +133,10 @@
 		$this->target = $this->charsetConversion->conv($this->target, 'utf-8', $GLOBALS['LANG']->charSet);
 		$this->target = $this->basicff->is_directory($this->target);
 		$key=$this->basicff->checkPathAgainstMounts($this->target.'/');
-		if (!$this->target || !$key)	{
-			t3lib_BEfunc::typo3PrintError ($GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', true), $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', true), '');
-			exit;
+		if (!$this->target || !$key) {
+			$title = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', TRUE);
+			$message = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', TRUE);
+			throw new RuntimeException($title . ': ' . $message);
 		}
 
 			// Finding the icon
Index: typo3/init.php
===================================================================
--- typo3/init.php	(Revision 9067)
+++ typo3/init.php	(Arbeitskopie)
@@ -274,9 +274,8 @@
 // **********************
 // Check Hardcoded lock on BE:
 // **********************
-if ($TYPO3_CONF_VARS['BE']['adminOnly'] < 0)	{
-	t3lib_BEfunc::typo3printError('Backend locked', 'Backend and Install Tool are locked for maintenance. [BE][adminOnly] is set to "' . intval($TYPO3_CONF_VARS['BE']['adminOnly']) . '".');
-	exit;
+if ($TYPO3_CONF_VARS['BE']['adminOnly'] < 0) {
+	throw new RuntimeException('TYPO3 Backend locked: Backend and Install Tool are locked for maintenance. [BE][adminOnly] is set to "' . intval($TYPO3_CONF_VARS['BE']['adminOnly']) . '".');
 }
 if (!(TYPO3_REQUESTTYPE & TYPO3_REQUESTTYPE_CLI) && @is_file(PATH_typo3conf . 'LOCK_BACKEND')) {
 	if (TYPO3_PROCEED_IF_NO_USER == 2) {
@@ -286,7 +285,7 @@
 		if ($fContent)	{
 			header('Location: '.$fContent);	// Redirect
 		} else {
-			t3lib_BEfunc::typo3printError('Backend locked', 'Browser backend is locked for maintenance. Remove lock by removing the file "typo3conf/LOCK_BACKEND" or use CLI-scripts.');
+			throw new RuntimeException('TYPO3 Backend locked: Browser backend is locked for maintenance. Remove lock by removing the file "typo3conf/LOCK_BACKEND" or use CLI-scripts.');
 		}
 		exit;
 	}
@@ -369,15 +368,12 @@
 // *************************
 if ($TYPO3_DB->sql_pconnect(TYPO3_db_host, TYPO3_db_username, TYPO3_db_password))	{
 	if (!TYPO3_db)	{
-		t3lib_BEfunc::typo3PrintError('Database Error', 'No database selected');
-		exit;
+		throw new RuntimeException('Database Error: No database selected', time());
 	} elseif (!$TYPO3_DB->sql_select_db(TYPO3_db))	{
-		t3lib_BEfunc::typo3PrintError('Database Error', 'Cannot connect to the current database, "' . TYPO3_db . '"');
-		exit;
+		throw new RuntimeException('Database Error: Cannot connect to the current database, "' . TYPO3_db . '"', time());
 	}
 } else {
-	t3lib_BEfunc::typo3PrintError('Database Error', 'The current username, password or host was not accepted when the connection to the database was attempted to be established!');
-	exit;
+	throw new RuntimeException('Database Error: The current username, password or host was not accepted when the connection to the database was attempted to be established!', time());
 }
 
 
@@ -385,8 +381,7 @@
 // Checks for proper browser
 // *******************************
 if (!$CLIENT['BROWSER'] && !(TYPO3_REQUESTTYPE & TYPO3_REQUESTTYPE_CLI)) {
-	t3lib_BEfunc::typo3PrintError ('Browser error','Your browser version looks incompatible with this TYPO3 version!',0);
-	exit;
+	throw new RuntimeException('Browser Error: Your browser version looks incompatible with this TYPO3 version!', time());
 }
 
 
Index: typo3/sysext/simulatestatic/class.tx_simulatestatic.php
===================================================================
--- typo3/sysext/simulatestatic/class.tx_simulatestatic.php	(Revision 9067)
+++ typo3/sysext/simulatestatic/class.tx_simulatestatic.php	(Arbeitskopie)
@@ -107,7 +107,8 @@
 					$message = 'PATH_INFO was not configured for this website, and the URL tries to find the page by PATH_INFO!';
 					header(t3lib_utility_Http::HTTP_STATUS_503);
 					t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-					$parentObject->printError($message.'<br /><br /><a href="' . htmlspecialchars($redirectUrl) . '">Click here to get to the right page.</a>','Error: PATH_INFO not configured');
+					$message = 'Error: PATH_INFO not configured: ' . $message . '<br /><br /><a href="' . htmlspecialchars($redirectUrl) . '">Click here to get to the right page.</a>';
+					throw new RuntimeException($message);
 				}
 			} else {
 				t3lib_utility_Http::redirect($redirectUrl);
Index: typo3/sysext/lang/lang.php
===================================================================
--- typo3/sysext/lang/lang.php	(Revision 9067)
+++ typo3/sysext/lang/lang.php	(Arbeitskopie)
@@ -164,10 +164,7 @@
 			$this->charSet = $GLOBALS['TYPO3_CONF_VARS']['BE']['forceCharset'];
 
 			if ($this->charSet != 'utf-8' && !$this->csConvObj->initCharset($this->charSet)) {
-				t3lib_BEfunc::typo3PrintError('Forced charset not found',
-					'The forced character set "'. $this->charSet . '" was not found in t3lib/csconvtbl/'
-				);
-				exit;
+				throw new RuntimeException('Forced charset not found: The forced character set "'. $this->charSet . '" was not found in t3lib/csconvtbl/');
 			}
 		}
 	}
Index: typo3/sysext/cms/tslib/class.tslib_fe.php
===================================================================
--- typo3/sysext/cms/tslib/class.tslib_fe.php	(Revision 9067)
+++ typo3/sysext/cms/tslib/class.tslib_fe.php	(Arbeitskopie)
@@ -498,7 +498,7 @@
 		}
 		if ($link !== FALSE) {
 			if (!TYPO3_db)	{
-				$this->printError('No database selected','Database Error');
+				throw new RuntimeException('Database Error: No database selected');
 					// Redirects to the Install Tool:
 				echo '<script type="text/javascript">
 						/*<![CDATA[*/
@@ -513,8 +513,7 @@
 					$message = 'Cannot connect to the current database, "'.TYPO3_db.'"';
 					t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
 					header('HTTP/1.0 503 Service Temporarily Unavailable');
-					$this->printError($message, 'Database Error');
-					exit;
+					throw new RuntimeException('Database Error:' . $message);
 				}
 			}
 		} else {
@@ -534,8 +533,7 @@
 				$message = 'The current username, password or host was not accepted when the connection to the database was attempted to be established!';
 				t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
 				header('HTTP/1.0 503 Service Temporarily Unavailable');
-				$this->printError($message, 'Database Error');
-				exit;
+				throw new RuntimeException('Database Error:' . $message);
 			}
 		}
 
@@ -959,8 +957,7 @@
 						$message = 'No pages are found on the rootlevel!';
 						t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
 						header('HTTP/1.0 503 Service Temporarily Unavailable');
-						$this->printError($message);
-						exit;
+						throw new RuntimeException($message);
 					}
 				}
 			}
@@ -1052,8 +1049,7 @@
 					$message = 'The requested page does not exist!';
 					header('HTTP/1.0 404 Page Not Found');
 					t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-					$this->printError($message);
-					exit;
+					throw new RuntimeException($message);
 				}
 			}
 		}
@@ -1066,8 +1062,7 @@
 				$message = 'The requested page does not exist!';
 				header('HTTP/1.0 404 Page Not Found');
 				t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-				$this->printError($message);
-				exit;
+				throw new RuntimeException($message);
 			}
 		}
 
@@ -1103,8 +1098,7 @@
 					$message = 'The requested page didn\'t have a proper connection to the tree-root! <br /><br />('.$this->sys_page->error_getRootLine.')';
 					header('HTTP/1.0 503 Service Temporarily Unavailable');
 					t3lib_div::sysLog(str_replace('<br /><br />','',$message), 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-					$this->printError($message);
-					exit;
+					throw new RuntimeException($message);
 				}
 			}
 			$this->fePreview = 1;
@@ -1119,8 +1113,7 @@
 					$message = 'The requested page was not accessible!';
 					header('HTTP/1.0 503 Service Temporarily Unavailable');
 					t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-					$this->printError($message);
-					exit;
+					throw new RuntimeException($message);
 				}
 			} else {
 				$el = reset($this->rootLine);
@@ -1184,8 +1177,7 @@
 				$message = 'Page shortcuts were looping in uids '.implode(',',$pageLog).'...!';
 				header('HTTP/1.0 500 Internal Server Error');
 				t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-				$this->printError($message);
-				exit;
+				throw new RuntimeException($message);
 			}
 		}
 			// Return resulting page:
@@ -1457,7 +1449,7 @@
 	/**
 	 * Page unavailable handler. Acts a wrapper for the pageErrorHandler method.
 	 *
-	 * @param	mixed		Which type of handling; If a true PHP-boolean or TRUE then a ->printError message is outputted. If integer an error message with that number is shown. Otherwise the $code value is expected to be a "Location:" header value.
+	 * @param	mixed		Which type of handling; If a true PHP-boolean or TRUE then a ->t3lib_message_ErrorPageMessage is outputted. If integer an error message with that number is shown. Otherwise the $code value is expected to be a "Location:" header value.
 	 * @param	string		If set, this is passed directly to the PHP function, header()
 	 * @param	string		If set, error messages will also mention this as the reason for the page-not-found.
 	 * @return	void		(The function exits!)
@@ -1469,7 +1461,7 @@
 	/**
 	 * Page not found handler. Acts a wrapper for the pageErrorHandler method.
 	 *
-	 * @param	mixed		Which type of handling; If a true PHP-boolean or TRUE then a ->printError message is outputted. If integer an error message with that number is shown. Otherwise the $code value is expected to be a "Location:" header value.
+	 * @param	mixed		Which type of handling; If a true PHP-boolean or TRUE then a ->t3lib_message_ErrorPageMessage is outputted. If integer an error message with that number is shown. Otherwise the $code value is expected to be a "Location:" header value.
 	 * @param	string		If set, this is passed directly to the PHP function, header()
 	 * @param	string		If set, error messages will also mention this as the reason for the page-not-found.
 	 * @return	void		(The function exits!)
@@ -1482,7 +1474,7 @@
 	 * Generic error page handler.
 	 * Exits.
 	 *
-	 * @param	mixed		Which type of handling; If a true PHP-boolean or TRUE then a ->printError message is outputted. If integer an error message with that number is shown. Otherwise the $code value is expected to be a "Location:" header value.
+	 * @param	mixed		Which type of handling; If a true PHP-boolean or TRUE then a ->t3lib_message_ErrorPageMessage is outputted. If integer an error message with that number is shown. Otherwise the $code value is expected to be a "Location:" header value.
 	 * @param	string		If set, this is passed directly to the PHP function, header()
 	 * @param	string		If set, error messages will also mention this as the reason for the page-not-found.
 	 * @return	void		(The function exits!)
@@ -1499,7 +1491,7 @@
 
 			// Create response:
 		if (gettype($code)=='boolean' || !strcmp($code,1))	{	// Simply boolean; Just shows TYPO3 error page with reason:
-			$this->printError('The page did not exist or was inaccessible.'.($reason ? ' Reason: '.htmlspecialchars($reason) : ''));
+			throw new RuntimeException('The page did not exist or was inaccessible.' . ($reason ? ' Reason: ' . htmlspecialchars($reason) : ''));
 		} elseif (t3lib_div::isFirstPartOfStr($code,'USER_FUNCTION:')) {
 			$funcRef = trim(substr($code,14));
 			$params = array(
@@ -1516,7 +1508,7 @@
 				$fileContent = str_replace('###REASON###', htmlspecialchars($reason), $fileContent);
 				echo $fileContent;
 			} else {
-				$this->printError('Configuration Error: 404 page "'.$readFile.'" could not be found.');
+				throw new RuntimeException('Configuration Error: 404 page "' . $readFile.'" could not be found.');
 			}
 		} elseif (t3lib_div::isFirstPartOfStr($code,'REDIRECT:')) {
 			t3lib_utility_Http::redirect(substr($code, 9));
@@ -1537,8 +1529,7 @@
 					$reason = 'Page cannot be found.';
 				}
 				$reason.= LF . LF . 'Additionally, ' . $code . ' was not found while trying to retrieve the error document.';
-				$this->printError('Reason: '.nl2br(htmlspecialchars($reason)));
-				exit();
+				throw new RuntimeException('Reason: ' . nl2br(htmlspecialchars($reason)));
 			}
 
 				// Prepare headers
@@ -1600,7 +1591,7 @@
 				echo $content;	// Output the content
 			}
 		} else {
-			$this->printError($reason ? 'Reason: '.htmlspecialchars($reason) : 'Page cannot be found.');
+			throw new RuntimeException($reason ? 'Reason: '.htmlspecialchars($reason) : 'Page cannot be found.');
 		}
 		exit();
 	}
@@ -2095,8 +2086,7 @@
 						$message = 'The page is not configured! [type= '.$this->type.']['.$this->sPre.']';
 						header('HTTP/1.0 503 Service Temporarily Unavailable');
 						t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-						$this->printError($message);
-						exit;
+						throw new RuntimeException($message);
 					}
 				} else {
 					$this->config['config'] = array();
@@ -2155,8 +2145,7 @@
 					$message = 'No TypoScript template found!';
 					header('HTTP/1.0 503 Service Temporarily Unavailable');
 					t3lib_div::sysLog($message, 'cms', t3lib_div::SYSLOG_SEVERITY_ERROR);
-					$this->printError($message);
-					exit;
+					throw new RuntimeException($message);
 				}
 			}
 		}
@@ -4281,9 +4270,11 @@
 	 * @param	string		Header string
 	 * @return	void
 	 * @see t3lib_timeTrack::debug_typo3PrintError()
+	 * @see	t3lib_message_ErrorPageMessage
 	 */
-	function printError($label,$header='Error!')	{
-		t3lib_timeTrack::debug_typo3PrintError($header,$label,0,t3lib_div::getIndpEnv('TYPO3_SITE_URL'));
+	function printError($label,$header='Error!') {
+		t3lib_div::logDeprecatedFunction();
+		t3lib_timeTrack::debug_typo3PrintError($header, $label, 0, t3lib_div::getIndpEnv('TYPO3_SITE_URL'));
 	}
 
 	/**
Index: typo3/sysext/cms/tslib/class.tslib_pagegen.php
===================================================================
--- typo3/sysext/cms/tslib/class.tslib_pagegen.php	(Revision 9067)
+++ typo3/sysext/cms/tslib/class.tslib_pagegen.php	(Arbeitskopie)
@@ -118,16 +118,14 @@
 			// Base url:
 		if ($GLOBALS['TSFE']->config['config']['baseURL'])	{
 			if ($GLOBALS['TSFE']->config['config']['baseURL']==='1')	{
-					// Deprecated property, going to be dropped.
+					// Deprecated property, going to be dropped in TYPO3 4.7.
 				$error = 'Unsupported TypoScript property was found in this template: "config.baseURL="1"
 
 This setting has been deprecated in TYPO 3.8.1 due to security concerns.
 You need to change this value to the URL of your website root, otherwise TYPO3 will not work!
 
 See <a href="http://wiki.typo3.org/index.php/TYPO3_3.8.1" target="_blank">wiki.typo3.org/index.php/TYPO3_3.8.1</a> for more information.';
-
-				$GLOBALS['TSFE']->printError(nl2br($error));
-				exit;
+				throw new RuntimeException(nl2br($error));
 			} else {
 				$GLOBALS['TSFE']->baseUrl = $GLOBALS['TSFE']->config['config']['baseURL'];
 			}
Index: typo3/sysext/install/mod/class.tx_install.php
===================================================================
--- typo3/sysext/install/mod/class.tx_install.php	(Revision 9067)
+++ typo3/sysext/install/mod/class.tx_install.php	(Arbeitskopie)
@@ -284,13 +284,10 @@
 				// Check for mandatory PHP modules
 			$missingPhpModules = $this->getMissingPhpModules();
 			if (count($missingPhpModules) > 0) {
-				t3lib_BEfunc::typo3PrintError(
-					'TYPO3 Installation Error',
-					'The following PHP module(s) is/are missing: <em>' .
+				throw new RuntimeException('TYPO3 Installation Error: The following PHP module(s) is/are missing: <em>' .
 						implode(', ', $missingPhpModules) .
 						'</em><br /><br />You need to install and enable these modules first to be able to install TYPO3.'
 				);
-				die();
 			}
 		}
 		if (t3lib_div::_GP('step') === 'go') {
Index: typo3/db_list.php
===================================================================
--- typo3/db_list.php	(Revision 9067)
+++ typo3/db_list.php	(Arbeitskopie)
@@ -46,7 +46,7 @@
 } else {
 	$title = sprintf($GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_core.xml:extension.not.installed'), 'list');
 	$message = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_core.xml:link.to.dblist.correctly');
-	t3lib_BEfunc::typo3PrintError($title, $message);
+	throw new RuntimeException($title . ': ' . $message);
 }
 
 ?>
Index: typo3/file_upload.php
===================================================================
--- typo3/file_upload.php	(Revision 9067)
+++ typo3/file_upload.php	(Arbeitskopie)
@@ -133,8 +133,9 @@
 		$this->target = $this->basicff->is_directory($this->target);
 		$key = $this->basicff->checkPathAgainstMounts($this->target . '/');
 		if (!$this->target || !$key) {
-			t3lib_BEfunc::typo3PrintError($GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', true), $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', true), '');
-			exit;
+			$title = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:paramError', TRUE);
+			$message = $GLOBALS['LANG']->sL('LLL:EXT:lang/locallang_mod_file_list.xml:targetNoDir', TRUE);
+			throw new RuntimeException($title . ': ' . $message);
 		}
 
 			// Finding the icon