I think what's happening is we're creating a filter during DB migration (for 1.4 to 1.5 auth changes) and this is invalid.

As a workaround, comment out this line in /usr/share/foreman/app/models/filter.rb, circa line 47:

validates_with ScopedSearchValidator

Just to give you some feeback. I ran into this problem and commenting out `validates_with ScopedSearchValidator` worked to get around the issue.

I hit the same issue upgrading from 1.4 to the 1.5.2-1 RPMs. Commenting line 47 in filer.rb also fixed it.

Thanks for the fix.. I was also affected.