Problem solved. I had added a property named : controlsource. VFP9 did let me save it the first time but now appears not like that property name which makes sense.

>Hello,
>
>I created a Visual Class containing the Exontol's Combo box OLE. I have been working with it this week and have it just about integrated into my frameworks. It is a very nice replacement for VFP's flawed Combo Box control.
>
>My problem is something has happened (corruption of some sort) and I can no longer save the Visual Class without getting a C0000005 error in VFPSP1 and VFPS2. I can edit and save it on VFP8SP1 and I can edit subclasses of the class in VFPSP1 and VFPS2. This happened to me a few years ago working with MS Tree View OLE and I ended up having to create the class all over again copying and pasting the code from the corrupted class.
>
>Anyone ever run into this and is there a fix? I really don't want to recreate the class.
>
>Thanks,
>Will