I'm having an odd issue with Fusion on Yosemite when I attempt to use Unity. My guest is Windows 7 enterprise, fully patched.
When I attempt to open most, but not all, applications, I repeatedly get a warning similar to this:
You are opening the application “<Windows Application>” for the first time. Are you sure you want to open this application?
The application is in a folder named “Applications.” To see the application in the Finder without opening it, click Show Application.
This happens even though I have opened the applications several times.