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:
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>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:
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>	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.
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>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?
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>Thanks
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>Richard