"Can't show non-modal form when modal..." vs Windows 2000
Posted on 2002-07-11
I've written a VB6 program and it is installed on 35 various workstations.
I'm getting error 401 "Can't show non-modal form when modal form is displayed" in a couple of places, on two Window 2000 (Sp2) machines with the latest Windows updates ran on them. However, this error never occurs on the Windows98 & NT4 workstations. And also doesn't occur on 5 other Windows 2000 workstations (Sp2) that haven't had the Windows updates run.
Also on these two machines modal forms sometimes open frozen (as if Form.Enabled = False) where clicking on them does nothing but Escape/Alt+F4 do close the form.
I think the error could possibly be linked to a modal form that's hidden, but why work on the other 33 machines???
Assistance would be much appreciated