Jim,

>I followed the developer guide for adding the framework files to my windows project, but I got the following error:
>
>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: mmMaintenanceForm --- The base class 'OakLeaf.MM.Main.Windows.Forms.mmBusinessForm' could not be loaded. Ensure the assembly has been referenced and that all projects have been built.

Try opening the MM .NET Windows Forms solution directly and see if you still get this error. There is actually a bug in VS 2005 that can cause this problem. In order to get around it you sometimes have to turn off Edit and Continue.

Best Regards,