I have a modified FilesInUse dialog. Just including it in project and changing reference in UI does not help - I get "ICE20: Standard Dialog: 'FilesInUse' not found in Dialog table" error when building installation project.
Browsing the Net I've found one advice - to supress ICE validation for ICE20. Well, building the project with such settings works fine, and the msi also works fine, but I'm not sure that's a good solution to the problem.
Another advice was to modify FilesInUse and remove WixUIExtension from references, but as far as I know this way I'll end up with copying all the needed dialog files to my project. This I'd like to avoid.
So, what can be done to include my custom FilesInUse in WIX project correctly?