I'm trying to subclass a Form and add a virtual function to it for use with a toolbar/Save menuitem in an MDI Parent window. I'm getting the following warning:

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: 

	frmHoldTransactions --- The base class 'DCF.ReconSys.Forms.ReconSysMDIChildFormBase' could not be loaded.  Ensure the assembly has been referenced and that all projects have been built.

The assembly was built. I'm guessing I need to add some sort of Designer attributes to my subclass in order to use it in the form designer. Any suggestions for a newbie?

Thanks

Richard