Windows 7 (x64, but the app is x86) (And two different machines.)
Whenever I use a built-in dialog (or MessageBox, for that matter) is does not appear.
I've tried both .ShowDialog() and .ShowDialog(this) to no avail.
BUT, if I briefly tap the ALT key after the dialog is supposed to show up, it magically appears. Likewise if I open, close, move any other application that's available. For instance, IE or Chrome. It's like the system is waiting until something else happens before showing the dialog.
I've eliminated the use of MessageBox by making my own, so that's not a problem anymore... But I don't have an alternative to the FolderBrowserDialog.
What the heck is going on? Any ideas?