Well, this error is not anything I want to see:

The designer could not be shown for this file because none of the classes within it can be designed. The designer inspected the following classes in the file:

frmSingleRecord --- The base class 'Object' could not be loaded. Ensure the assembly has been referenced and that all projects have been built.
I'm in the process of converting a project from SDI to MDI and something seems to have gone terribly wrong with one of my forms in the process. Google suggests that this is actually a Visual Studio bug; all I can tell is that closing, reopening, and rebuilding the project doesn't make it go away. Any help here?