I've been told one of our apps just crashes on 8.1, but works on everything else. Another gives the error "The procedure entry point CoInternetSetFeatureEnabled could not be located in the dynamic link library C:\WINDOWS\AppPatch\AcGenral.DLL.'

These were created with VS2012 SP3. I don't have an 8.1 computer and have no idea where to even look. Any ideas?