Index: t3lib/core_autoload.php
===================================================================
--- t3lib/core_autoload.php	(Revision 8607)
+++ t3lib/core_autoload.php	(Arbeitskopie)
@@ -136,6 +136,7 @@
 	't3lib_spritemanager_spritegenerator' => PATH_t3lib . 'spritemanager/class.t3lib_spritemanager_spritegenerator.php',
 	't3lib_spritemanager_spriteicongenerator' => PATH_t3lib . 'interfaces/interface.t3lib_spritemanager_spriteicongenerator.php',
 	't3lib_spritemanager_simplehandler' => PATH_t3lib . 'spritemanager/class.t3lib_spritemanager_simplehandler.php',
+	't3lib_extjs_extdirectdebug' => PATH_t3lib . 'extjs/class.t3lib_extjs_extdirectdebug.php',
 );
 
 $tslibClasses = require(PATH_typo3 . 'sysext/cms/ext_autoload.php');
Index: t3lib/class.t3lib_div.php
===================================================================
--- t3lib/class.t3lib_div.php	(Revision 8607)
+++ t3lib/class.t3lib_div.php	(Arbeitskopie)
@@ -3572,9 +3572,11 @@
 					if (is_array($val))	{
 						$result.=self::view_array($val);
 					} elseif (is_object($val))	{
-						$string = get_class($val);
+						$string = '';
 						if (method_exists($val, '__toString'))	{
-							$string .= ': '.(string)$val;
+							$string = get_class($val) . ': '.(string)$val;
+						} else {
+							$string = print_r($val, TRUE);
 						}
 						$result .= '<font face="Verdana,Arial" size="1" color="red">'.nl2br(htmlspecialchars($string)).'<br /></font>';
 					} else	{
Index: t3lib/class.t3lib_pagerenderer.php
===================================================================
--- t3lib/class.t3lib_pagerenderer.php	(Revision 8607)
+++ t3lib/class.t3lib_pagerenderer.php	(Arbeitskopie)
@@ -873,6 +873,57 @@
 		}
 	}
 
+	/**
+	 * Adds the ExtDirect code
+	 *
+	 * @return void
+	 */
+	public function addExtDirectCode() {
+			// Note: we need to iterate thru the object, because the addProvider method
+			// does this only with multiple arguments
+		$this->addExtOnReadyCode(
+			'for (var api in Ext.app.ExtDirectAPI) {
+				Ext.Direct.addProvider(Ext.app.ExtDirectAPI[api]);
+			}
+
+			var extDirectDebug = function(message, header, group) {
+				var TYPO3ViewportInstance = null;
+
+				if (top && top.TYPO3 && typeof top.TYPO3.Backend === "object") {
+					TYPO3ViewportInstance = top.TYPO3.Backend;
+				} else if (typeof TYPO3 === "object" && typeof TYPO3.Backend === "object") {
+					TYPO3ViewportInstance = TYPO3.Backend;
+				}
+
+				if (TYPO3ViewportInstance !== null) {
+					TYPO3ViewportInstance.DebugConsole.addTab(message, header, group);
+				} else {
+					document.write(message);
+				}
+			};
+
+			Ext.Direct.on("exception", function(event) {
+				extDirectDebug(
+					"<p>" + event.message + "</p>" +
+					"<p style=\"margin-top: 20px;\">" +
+						"<strong>Backtrace:</strong><br />" +
+						event.where.replace(/#/g, "<br />#") +
+					"</p>",
+					event.method,
+					"ExtDirect - Exception"
+				);
+			});
+
+			Ext.Direct.on("event", function(event, provider) {
+				if (typeof event.debug !== "undefined" && event.debug !== "") {
+					extDirectDebug(event.debug, event.method, "ExtDirect - Debug");
+				}
+			});
+			',
+			TRUE
+		);
+	}
+
 	/* CSS Files */
 
 	/**
Index: t3lib/extjs/class.t3lib_extjs_extdirectrouter.php
===================================================================
--- t3lib/extjs/class.t3lib_extjs_extdirectrouter.php	(Revision 8607)
+++ t3lib/extjs/class.t3lib_extjs_extdirectrouter.php	(Arbeitskopie)
@@ -3,6 +3,7 @@
 *  Copyright notice
 *
 *  (c) 2010 Sebastian Kurfuerst <sebastian@typo3.org>
+*  (c) 2010 Stefan Galinski <stefan.galinski@gmail.com>
 *  All rights reserved
 *
 *  This script is part of the TYPO3 project. The TYPO3 project is
@@ -41,56 +42,67 @@
 	 * @return void
 	 */
 	public function route($ajaxParams, TYPO3AJAX $ajaxObj) {
-		try {
-			$isForm = FALSE;
-			$isUpload = FALSE;
-			$rawPostData = file_get_contents('php://input');
-			$postParameters = t3lib_div::_POST();
-			$namespace = t3lib_div::_GET('namespace');
+		$isForm = FALSE;
+		$isUpload = FALSE;
+		$rawPostData = file_get_contents('php://input');
+		$postParameters = t3lib_div::_POST();
+		$namespace = t3lib_div::_GET('namespace');
+		$response = array();
+		$request = NULL;
 
-			if (!empty($postParameters['extAction'])) {
-				$isForm = TRUE;
-				$isUpload = $postParameters['extUpload'] === 'true';
+		if (!empty($postParameters['extAction'])) {
+			$isForm = TRUE;
+			$isUpload = $postParameters['extUpload'] === 'true';
 
-				$request->action = $postParameters['extAction'];
-				$request->method = $postParameters['extMethod'];
-				$request->tid = $postParameters['extTID'];
-				$request->data = array($_POST + $_FILES);
-			} elseif (!empty($rawPostData)) {
-				$request = json_decode($rawPostData);
-			} else {
-				throw new t3lib_error_Exception('ExtDirect: Missing Parameters!');
-			}
+			$request = new stdClass;
+			$request->action = $postParameters['extAction'];
+			$request->method = $postParameters['extMethod'];
+			$request->tid = $postParameters['extTID'];
+			$request->data = array($_POST + $_FILES);
+		} elseif (!empty($rawPostData)) {
+			$request = json_decode($rawPostData);
+		} else {
+			$response[] = array(
+				'type' => 'exception',
+				'message' => 'Something went wrong with an ExtDirect call!'
+			);
+		}
 
-			$response = NULL;
-			if (is_array($request)) {
-				$response = array();
-				foreach ($request as $singleRequest) {
-					$response[] = $this->processRpc($singleRequest, $namespace);
-				}
-			} else {
-				$response = $this->processRpc($request, $namespace);
-			}
+		if (!is_array($request)) {
+			$request = array($request);
+		}
 
-			if ($isForm && $isUpload) {
-				$ajaxObj->setContentFormat('plain');
-				$response = json_encode($response);
-				$response = preg_replace('/&quot;/', '\\&quot;', $response);
+		foreach ($request as $index => $singleRequest) {
+			$response[$index] = array(
+				'tid' => $singleRequest->tid,
+				'action' => $singleRequest->action,
+				'method' => $singleRequest->method
+			);
 
-				$response = array(
-					'<html><body><textarea>' .
-					$response .
-					'</textarea></body></html>'
-				);
-			} else {
-				$ajaxObj->setContentFormat('jsonbody');
+			try {
+				$response[$index]['type'] = 'rpc';
+				$response[$index]['result'] = $this->processRpc($singleRequest, $namespace);
+				$response[$index]['debug'] = t3lib_extjs_ExtDirectDebug::__toString();
+
+			} catch (Exception $exception) {
+				$response[$index]['type'] = 'exception';
+				$response[$index]['message'] = $exception->getMessage();
+				$response[$index]['where'] = $exception->getTraceAsString();
 			}
-		} catch (t3lib_error_Exception $exception) {
+		}
+
+		if ($isForm && $isUpload) {
+			$ajaxObj->setContentFormat('plain');
+			$response = json_encode($response);
+			$response = preg_replace('/&quot;/', '\\&quot;', $response);
+
 			$response = array(
-				'type' => 'exception',
-				'message' => $exception->getMessage(),
-				'where' => $exception->getTraceAsString()
+				'<html><body><textarea>' .
+				$response .
+				'</textarea></body></html>'
 			);
+		} else {
+			$ajaxObj->setContentFormat('jsonbody');
 		}
 
 		$ajaxObj->setContent($response);
@@ -104,40 +116,27 @@
 	 *
 	 * @param object $singleRequest request object from extJS
 	 * @param string $namespace namespace like TYPO3.Backend
+	 * @throws t3lib_error_exception if the remote method couldn't be found
 	 * @return mixed return value of the called method
 	 */
 	protected function processRpc($singleRequest, $namespace) {
-		try {
-			$endpointName = $namespace . '.' . $singleRequest->action;
+		$endpointName = $namespace . '.' . $singleRequest->action;
 
 			// theoretically this can never happen, because of an javascript error on
 			// the client side due the missing namespace/endpoint
-			if (!isset($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ExtDirect'][$endpointName])) {
-				throw new t3lib_error_Exception('ExtDirect: Call to undefined endpoint: ' . $endpointName);
-			}
-
-			$response = array(
-				'type' => 'rpc',
-				'tid' => $singleRequest->tid,
-				'action' => $singleRequest->action,
-				'method' => $singleRequest->method
-			);
-
-			$endpointObject = t3lib_div::getUserObj(
-				$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ExtDirect'][$endpointName],
-				FALSE
-			);
-
-			$response['result'] = call_user_func_array(
-				array($endpointObject, $singleRequest->method),
-				is_array($singleRequest->data) ? $singleRequest->data : array()
-			);
-
-		} catch (t3lib_error_Exception $exception) {
-			throw $exception;
+		if (!isset($GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ExtDirect'][$endpointName])) {
+			throw new t3lib_error_Exception('ExtDirect: Call to undefined endpoint: ' . $endpointName);
 		}
 
-		return $response;
+		$endpointObject = t3lib_div::getUserObj(
+			$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['ExtDirect'][$endpointName],
+			FALSE
+		);
+
+		return call_user_func_array(
+			array($endpointObject, $singleRequest->method),
+			is_array($singleRequest->data) ? $singleRequest->data : array()
+		);
 	}
 }
 
Index: t3lib/extjs/class.t3lib_extjs_extdirectdebug.php
===================================================================
--- t3lib/extjs/class.t3lib_extjs_extdirectdebug.php	(Revision 0)
+++ t3lib/extjs/class.t3lib_extjs_extdirectdebug.php	(Revision 0)
@@ -0,0 +1,67 @@
+<?php
+/***************************************************************
+*  Copyright notice
+*
+*  (c) 2010 Stefan Galinski <stefan.galinski@gmail.com>
+*  All rights reserved
+*
+*  This script is part of the TYPO3 project. The TYPO3 project is
+*  free software; you can redistribute it and/or modify
+*  it under the terms of the GNU General Public License as published by
+*  the Free Software Foundation; either version 2 of the License, or
+*  (at your option) any later version.
+*
+*  The GNU General Public License can be found at
+*  http://www.gnu.org/copyleft/gpl.html.
+*  A copy is found in the textfile GPL.txt and important notices to the license
+*  from the author is found in LICENSE.txt distributed with these scripts.
+*
+*
+*  This script is distributed in the hope that it will be useful,
+*  but WITHOUT ANY WARRANTY; without even the implied warranty of
+*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*  GNU General Public License for more details.
+*
+*  This copyright notice MUST APPEAR in all copies of the script!
+***************************************************************/
+
+/**
+ * Ext Direct Debug
+ *
+ * @author	Stefan Galinski <stefan.galinski@gmail.com>
+ * @package	TYPO3
+ */
+final class t3lib_extjs_ExtDirectDebug {
+	/**
+	 * Internal debug message array
+	 *
+	 * @var array
+	 */
+	protected static $debugMessages = array();
+
+	/**
+	 * Adds a new message of any data type to the internal debug message array.
+	 *
+	 * @param mixed $message
+	 * @return void
+	 */
+	public static function debug($message) {
+		self::$debugMessages[] = $message;
+	}
+
+	/**
+	 * Returns the internal debug messages as a string.
+	 *
+	 * @return string
+	 */
+	public static function __toString() {
+		$messagesAsString = '';
+		if (count(self::$debugMessages)) {
+			$messagesAsString = t3lib_div::view_array(self::$debugMessages);
+		}
+
+		return $messagesAsString;
+	}
+}
+
+?>
\ No newline at end of file
Index: typo3/backend.php
===================================================================
--- typo3/backend.php	(Revision 8607)
+++ typo3/backend.php	(Arbeitskopie)
@@ -100,19 +100,13 @@
 		$this->pageRenderer->loadScriptaculous('builder,effects,controls,dragdrop');
 		$this->pageRenderer->loadExtJS();
 
-			// register the extDirect API providers
-			// Note: we need to iterate thru the object, because the addProvider method
-			// does this only with multiple arguments
 		$this->pageRenderer->addExtOnReadyCode(
-			'for (var api in Ext.app.ExtDirectAPI) {
-				Ext.Direct.addProvider(Ext.app.ExtDirectAPI[api]);
-			}
-			TYPO3.Backend = new TYPO3.Viewport(TYPO3.Viewport.configuration);
+			'TYPO3.Backend = new TYPO3.Viewport(TYPO3.Viewport.configuration);
 			',
 			TRUE
 		);
+		$this->pageRenderer->addExtDirectCode();
 
-
 			// add default BE javascript
 		$this->js      = '';
 		$this->jsFiles = array(
