Project manager window hidden in zenon

Project manager window hidden in zenon

Good afternoon
I have had this once before where I have opened Zenon (6.20 sp4 build 0) and the project manager is missing even though it is selected. It is not hidden under other windows. See attached. Tried arrange windows, full screen mode, dual monitor view but it is not there.
There is a way to restore it without reinstalling that I found before by accident but cant find now. I remember clicking somewhere on the screen and it was something like arrange to default or something like that, this enabled the project manager to be displayed correctly again.
Any help appreciated.
Matt

This is a migrated post! Originally posted on 11.09.2010 by user mattsd. Please be aware that information can be outdated.