Problem when showing modal form

I have an explorer-style application. The list and the tree are both OCX within a form.
I am opening a different form over the list and the tree with vbModal attributes.
When closing this form both of the forms (list and tree) were disabled! shocked...
Please help ... any help will be apprciate!

I met pretty poor designed OCX, which behaved similar way. I set Autoredraw = True property for form with that control. It solved the problem. Maybe you need to try that method?
Vlad