I am facing the same problem with my project Yesterday it worked good.. I shutdown my system and came back to my work with the project, it is showing the error Error while trying to run project: Could not load file or assembly 'WindowsApplication1' or one of its dependencies. The module was expected to contain an assembly manifest. I had created a new application and run(F5) it,,, but the same error is coming.. I am not understanding the problem,,, wheather it is in my project or visual studio my entire one month work is seems to be gone,,,,,,,,,,,,,,,plz help me,,,,,,