>     0 /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(495):
> Mage::throwException('Invalid block t...')
>
> 1
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(437):
> Mage_Core_Model_Layout->_getBlockInstance('bundle/catalog/...', Array)
>
> 2
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(472):
> Mage_Core_Model_Layout->createBlock('bundle/catalog/...',
> 'germansetup.del...') 3
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(239):
> Mage_Core_Model_Layout->addBlock('bundle/catalog/...',
> 'germansetup.del...')
>
> 4
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(205):
> Mage_Core_Model_Layout->_generateBlock(Object(Mage_Core_Model_Layout_Element),
> Object(Mage_Core_Model_Layout_Element))
>
> 5
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Model/Layout.php(210):
> Mage_Core_Model_Layout->generateBlocks(Object(Mage_Core_Model_Layout_Element))
> 6
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(344):
> Mage_Core_Model_Layout->generateBlocks()
>
> 7
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Catalog/Helper/Product/View.php(73):
> Mage_Core_Controller_Varien_Action->generateLayoutBlocks()
>
> 8
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Catalog/Helper/Product/View.php(144):
> Mage_Catalog_Helper_Product_View->initProductLayout(Object(Mage_Catalog_Model_Product),
> Object(Mage_Catalog_ProductController)) 9
>
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Catalog/controllers/ProductController.php(132):
> Mage_Catalog_Helper_Product_View->prepareAndRender(494,
> Object(Mage_Catalog_ProductController), Object(Varien_Object)) 10
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Action.php(418):
> Mage_Catalog_ProductController->viewAction() 11
>
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254):
> Mage_Core_Controller_Varien_Action->dispatch('view') 12
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Controller/Varien/Front.php(172):
> Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
>
> 13
> /var/www/musterprojekt.com/htdocs/app/code/core/Mage/Core/Model/App.php(365):
> Mage_Core_Controller_Varien_Front->dispatch()
>
> 14 /var/www/musterprojekt.com/htdocs/app/Mage.php(692):
> Mage_Core_Model_App->run(Array)
>
> 15 /var/www/musterprojekt.com/htdocs/index.php(161): Mage::run('2',
> 'store')
>
> 16 {main}
>
> I can't actually find the reason for this.