Index: typo3/sysext/install/updates/class.tx_coreupdates_migrateworkspaces.php
===================================================================
--- typo3/sysext/install/updates/class.tx_coreupdates_migrateworkspaces.php	(revision 10114)
+++ typo3/sysext/install/updates/class.tx_coreupdates_migrateworkspaces.php	(working copy)
@@ -100,7 +100,7 @@
 		$this->includeTCA();
 
 			// install version and workspace extension (especially when updating from very old TYPO3 versions
-		$this->installExtensions(array('extbase', 'fluid', 'version', 'workspaces'));
+		$this->installNecessaryExtensions(array('extbase', 'fluid', 'version', 'workspaces'));
 
 			// migrate all workspaces to support groups and be_users
 		if ($this->isOldStyleAdminFieldUsed()) {
@@ -143,23 +143,56 @@
 	}
 
 	/**
-	 * Install a extensions
+	 * Install extensions required for a complete workspaces setup
 	 *
-	 * @param	array		List of extension keys
-	 * @return	boolean	Determines whether this was successful or not
+	 * @param array $extensionKeys List of extension keys
+	 * @return void
 	 */
-	protected function installExtensions($extensionKeys) {
-		if (!is_array($extensionKeys)) {
-			return FALSE;
+	protected function installNecessaryExtensions(array $extensionKeys) {
+
+			// Install all necessary extensions
+		foreach ($extensionKeys as $extension) {
+			$this->installExtension($extension);
 		}
+			// Perform the related database updates
+		$this->runNewExtensionDbUpdates($extensionKeys);
+	}
 
-		$result = FALSE;
-		$extList = $this->addExtToList($extensionKeys);
-		if ($extList) {
-			$this->writeNewExtensionList($extList);
-			$result = TRUE;
+	/**
+	 * Performing all relevant database updates for the newly installed system extensions
+	 *
+	 * @param  array $extensionKeys
+	 * @return void
+	 */
+	protected function runNewExtensionDbUpdates($extensionKeys) {
+
+		$install = t3lib_div::makeInstance('t3lib_install');
+
+		foreach ($extensionKeys as $extension) {
+			$filename = t3lib_extMgm::extPath($extension, 'ext_tables.sql');
+			if (!is_readable($filename)) {
+				continue;
+			}
+
+			$fileContent = t3lib_div::getUrl($filename);
+			$fieldDefinitionsFromFile = $install->getFieldDefinitions_fileContent($fileContent);
+			if (count($fieldDefinitionsFromFile)) {
+				$fieldDefinitionsForCurrentDb = $install->getFieldDefinitions_database(TYPO3_db);
+				$diff = $install->getDatabaseExtra($fieldDefinitionsFromFile, $fieldDefinitionsForCurrentDb);
+				$updates = $install->getUpdateSuggestions($diff);
+				foreach ($updates as $key => $update_block) {
+						// make sure only certain blocks are processed
+						// we don't want to delete anything here!
+					if (!in_array($key, array('add', 'change', 'create_table'))) {
+						continue;
+					}
+					foreach ($update_block as $update) {
+						$this->sqlQueries[] = $update;
+						$GLOBALS['TYPO3_DB']->admin_query($update);
+					}
+				}
+			}
 		}
-		return $result;
 	}
 
 	/**