Front controller reached 100 router match iterations

#0 /kunden/455899_72535/webseiten/shop/app/code/core/Mage/Core/Controller/Varien/Front.php(179): Mage::throwException('Front controlle...')
#1 /kunden/455899_72535/webseiten/shop/app/code/core/Mage/Core/Model/App.php(354): Mage_Core_Controller_Varien_Front->dispatch()
#2 /kunden/455899_72535/webseiten/shop/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#3 /kunden/455899_72535/webseiten/shop/index.php(113): Mage::run('', 'store')
#4 {main}