IntroductionGTK# 2.12 does not run in Windows 7. Project build with GTK# is failed to run in debug mode with System.DllNotFoundException with message stated that libgtk-win32-2.0-0.dll not found.
This appear to be due to the long Environment Variables - PATH with long path list.
Edit the PATH variable in System Properties > Advanced > Environment Variables to move the GTK# Path "C:\Program Files (x86)\GtkSharp\2.12\bin" to the front of all the path string. Restart Xamarin studio and everything should works find.
- Bugzilla Ticket - Bug 37872