I'm getting this error in visual studio 2008 in a Mobile Desktop application .NET 3.5.
Could not find type 'MyNamespace.MyType'. Please make sure that the assembly that contains this type is referenced. If this type is a part of your development project, make sure that the project has been successfully built.
This shows up when opening a form. The type that it can't reference is a user control that is part of the same project. Nothing is wrong with the namespaces. This is maddening -- the project builds just fine.
Also, the referenced control is not a generic class like in this article: http://stackoverflow.com/questions/9314/could-not-find-type-error-loading-a-form-in-the-designer
UPDATE: well now later it seems to be working. This seems to be a sporadic problem...