James

If there is an error in the form's initialization then it won't show
it'll just, well, error.

I think you might have problems unloading a form during
initialization, why would you want to do that anyway?

Why not check whatever you need to check, eg if the other workbook is
open, before you open the form?

By the way I tried unloading a form in it's initialize event and all
sorts of error trapping - nothing worked.