[Flow] Image upload and displaying the uploaded image

[Cornel Widmer]

Unfortunately its a very common error and its not specific on the code I wrote. 
But its related on the following line: $model->removeImage();

When the line above is removed, everthing works fine except that the database is not updated with an empty value and so the frontend tries to display an image, but doesn't find the image on the file system.

Fatal error: Allowed memory size of 268435456 bytes exhausted (tried to allocate 79 bytes) in /home/ricoch/www/service.rico.ch/Packages/Libraries/doctrine/common/lib/Doctrine/Common/Util/Debug.php on line 117