invalid image checksum

#0 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend/local/Base/app/code/local/Codex/Base/Model/Image.php(338): Mage::throwException('invalid image c...')
#1 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend/local/Base/app/code/local/Codex/Base/controllers/ImageController.php(21): Codex_Base_Model_Image->loadByFilename('fartikel/83096/...')
#2 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend-core/app/code/core/Mage/Core/Controller/Varien/Action.php(418): Codex_Base_ImageController->loadAction()
#3 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend-core/app/code/core/Mage/Core/Controller/Varien/Router/Standard.php(254): Mage_Core_Controller_Varien_Action->dispatch('load')
#4 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend-core/app/code/core/Mage/Core/Controller/Varien/Front.php(172): Mage_Core_Controller_Varien_Router_Standard->match(Object(Mage_Core_Controller_Request_Http))
#5 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend-core/app/code/core/Mage/Core/Model/App.php(333): Mage_Core_Controller_Varien_Front->dispatch()
#6 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend-core/app/Mage.php(684): Mage_Core_Model_App->run(Array)
#7 /var/www/html/frontend-floraprima/feature-t54853-banner-nicht-da/vendor/floraprima/frontend-core/index.php(95): Mage::run('de', 'store')
#8 {main}