SUPEE-7405 on Magento 1.7.0.2 broke my site

[decornmore]

i get this on my front site: 

Invalid backend model specified: catalog/category_attribute_backend_image

[andhiirawan]

Hai, you can read the solution in here :

http://magento.stackexchange.com/questions/98220/security-patch-supee-7405-possible-problems

including discusses:

• Applying patch on Magento 1.7.0.0 breaks: http://magento.stackexchange.com/a/98246/2380
• Issues applying the patch on 1.7.0.2 : Security Patch SUPEE-7405 Issues

List of affected files

It can be found on this page here: http://magento.stackexchange.com/a/98232/2380 (credits @MagenX)