Index: typo3/sysext/cms/tslib/content/class.tslib_content_image.php
===================================================================
--- typo3/sysext/cms/tslib/content/class.tslib_content_image.php	(Revision 10243)
+++ typo3/sysext/cms/tslib/content/class.tslib_content_image.php	(Arbeitskopie)
@@ -42,7 +42,7 @@
 	 * @return	string		Output
 	 */
 	public function render($conf = array()) {
-		if ($this->cObj->checkIf($conf['if.'])) {
+		if (isset($conf['if.']) && $this->cObj->checkIf($conf['if.'])) {
 			$theValue = $this->cObj->cImage($conf['file'], $conf);
 			if (isset($conf['stdWrap.'])) {
 				$theValue = $this->cObj->stdWrap($theValue, $conf['stdWrap.']);
Index: typo3/sysext/cms/tslib/content/class.tslib_content_phpscriptinternal.php
===================================================================
--- typo3/sysext/cms/tslib/content/class.tslib_content_phpscriptinternal.php	(Revision 10243)
+++ typo3/sysext/cms/tslib/content/class.tslib_content_phpscriptinternal.php	(Arbeitskopie)
@@ -42,6 +42,10 @@
 	 * @return	string		Output
 	 */
 	public function render($conf = array()) {
+		if (!is_array($conf) || empty($conf['scriptSuffix'])) {
+			throw new InvalidArgumentException('Expected parameter $conf[\'scriptSuffix\'] was not given.', 1295705938);
+		}
+
 		$ext = $conf['scriptSuffix'];
 		unset($conf['scriptSuffix']);
 
Index: typo3/sysext/cms/tslib/content/class.tslib_content_text.php
===================================================================
--- typo3/sysext/cms/tslib/content/class.tslib_content_text.php	(Revision 10243)
+++ typo3/sysext/cms/tslib/content/class.tslib_content_text.php	(Arbeitskopie)
@@ -42,8 +42,11 @@
 	 * @return	string		Output
 	 */
 	public function render($conf = array()) {
-		$content = $conf['value'];
-		unset($conf['value']);
+		$content = '';
+		if (is_array($conf) && isset($conf['value'])) {
+			$content = $conf['value'];
+			unset($conf['value']);
+		}
 		if(count($conf)) {
 			$content = $this->cObj->stdWrap($content, $conf);
 		}