>Sorry, wasn't sure how to begin describing this. I have a custom toolbar that I was calling from the Init method of a formset with 'ThisFormSet.toolbarname.Dock(0)'. I have "This.Dock(0)' in the Init code of the toolbar named in the above statement. The problem is, I changed the base custom class of the toolbar and now both the old and the new toolbars show up docked on the formset. This happens in the app and the exe.

Try getting rid of the this.dock(0) call in the Init method of the parent and the subclassed toolbar object and try calling .dock() once from the formset. You are getting two instances of the toolbar object by creating a reference to the object.