Index: typo3/classes/class.livesearch.php
===================================================================
--- typo3/classes/class.livesearch.php	(revision 10116)
+++ typo3/classes/class.livesearch.php	(working copy)
@@ -58,8 +58,19 @@
 	 * @return  boolean  true if user has access, false if not
 	 */
 	public function checkAccess() {
-			// LiveSearch module is enabled for everybody
-		return true;
+		$access = FALSE;
+
+			// Loads the backend modules available for the logged in user.
+		$loadModules = t3lib_div::makeInstance('t3lib_loadModules');
+		$loadModules->observeWorkspaces = TRUE;
+		$loadModules->load($GLOBALS['TBE_MODULES']);
+
+			// Live search is heavily dependent on the list module and only available when that module is.
+		if (is_array($loadModules->modules['web']['sub']['list'])) {
+			$access = TRUE;
+		}
+
+		return $access;
 	}
 
 	/**
Index: typo3/backend.php
===================================================================
--- typo3/backend.php	(revision 10116)
+++ typo3/backend.php	(working copy)
@@ -366,9 +366,11 @@
 	protected function renderToolbar() {
 
 			// move search to last position
-		$search = $this->toolbarItems['liveSearch'];
-		unset($this->toolbarItems['liveSearch']);
-		$this->toolbarItems['liveSearch'] = $search;
+		if (array_key_exists('liveSearch', $this->toolbarItems)) {
+			$search = $this->toolbarItems['liveSearch'];
+			unset($this->toolbarItems['liveSearch']);
+			$this->toolbarItems['liveSearch'] = $search;
+		}
 
 		$toolbar = '<ul id="typo3-toolbar">';
 		$toolbar.= '<li>'.$this->getLoggedInUserLabel().'</li>