Broken Admin Panel after SUPEE-8788

After the installation of patch SUPEE-8788 in Magento I have experienced a broken product edit form in Catalog > Manage Products > { select any product } > Edit Product. Every time when I tried to edit a product it was logging the following error message.

I have found a community extension in my project which was causing the problem by rewriting the complete class Mage_Catalog_Helper_Image. With diff I was able to identify all changes which I needed to copy from core to the community extension.

I just added the missing constant

and updated the method validateUploadFile().

One thought on “Broken Admin Panel after SUPEE-8788”

  1. Thanks a lot, that was a real time saver! In my case the culprit was a customized version of Mage_Catalog_Helper_Image located at
    app/code/local/Mage/Catalog/Helper/Image.php that needed updating.

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