Chris,

>This setup works when the application is running.
>
>However, in design mode, when I click on the button to call up the builder form for the "ControlID on mmMenuExtender" property, the error "Invalid column name 'SecurityPK'" is displayed.

I checked into this and you're right...changing this column name works properly at run time, but breaks the designer. I need to fix this at the Framework level and will include it in the next release. I recommend temporarily changing the name of the field back to SecurityPK for now.

Regards,