No prb Richard I work with vb.net and never had that prb, that usually happens when you change something on your base class and then don't rebuild the project, but usuallt doing a rebuild all fix this.
>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