Index: t3lib/class.t3lib_loadmodules.php
===================================================================
--- t3lib/class.t3lib_loadmodules.php	(Revision 10039)
+++ t3lib/class.t3lib_loadmodules.php	(Arbeitskopie)
@@ -255,6 +255,11 @@
 			}
 		}
 
+			// check if this is a submodule
+		if (strpos($name, '_') !== FALSE) {
+			list($mainModule, ) = explode('_', $name, 2);
+		}
+
 		$modconf = array();
 		$path = preg_replace('/\/[^\/.]+\/\.\.\//', '/', $fullpath); // because 'path/../path' does not work
 		if (@is_dir($path) && file_exists($path . '/conf.php')) {
@@ -331,8 +336,13 @@
 					$modconf['navFrameScriptParam'] = $MCONF['navFrameScriptParam'];
 				}
 
+					// check if there is a navigation component (like the pagetree)
 				if (is_array($this->navigationComponents[$name])) {
 					$modconf['navigationComponentId'] = $this->navigationComponents[$name]['componentId'];
+						// check if the parent has a navigation component that also 
+						// goes down to the submodules (if they haven't overwritten it yet)
+				} else if ($mainModule && is_array($this->navigationComponents[$mainModule])) {
+					$modconf['navigationComponentId'] = $this->navigationComponents[$mainModule]['componentId'];
 				}
 			} else {
 				return FALSE;
Index: typo3/sysext/pagetree/ext_tables.php
===================================================================
--- typo3/sysext/pagetree/ext_tables.php	(Revision 10039)
+++ typo3/sysext/pagetree/ext_tables.php	(Arbeitskopie)
@@ -4,15 +4,10 @@
 }
 
 if (TYPO3_MODE === 'BE') {
-	$modules = array(
-		'web_layout', 'web_view', 'web_list', 'web_info', 'web_perm', 'web_func', 'web_ts',
-		'web_txrecyclerM1', 'web_txversionM1'
-	);
-	foreach ($modules as $module) {
-		t3lib_extMgm::addNavigationComponent($module, 'typo3-pagetree', array(
-			'TYPO3.Components.PageTree'
-		));
-	}
+
+	t3lib_extMgm::addNavigationComponent('web', 'typo3-pagetree', array(
+		'TYPO3.Components.PageTree'
+	));
 
 	$absoluteExtensionPath = t3lib_extMgm::extPath($_EXTKEY);
 	$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ExtDirect'] = array_merge(