I got it... somehow... Thanks for your help.

Richard

>and is defined as public or internal the base class?
>
>>In the same project/assembly. So, check.
>>
>>Richard
>>
>>
>>>Richard is the base form located on the same project as this form or in another one?
>>>if on diferent project/assembly make sure the form is defined as public instead of internal or private.
>>>
>>>>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