ApexSQL Diff GUI is not showing the panels (Object filter, Difference View, ...) I only see the object list. I go to the view menu and select them but nothing happens.
The way to fix this is to uninstall ApexSQL Diff, delete the content of C:\Users\%userprofile%\AppData\Local\ApexSQL\ApexSQL Diff and re-install the product.
Hope this helps!
Thanks Nodier that fixed the problem, I can see the panels now.