Layout got messed up. Lost RDP sessions

I had closed the Navigation tab, and I went around in menus trying to re-enable it. But I never found it. Then I pressed the F4-F8 keys and I saw some changes happening. But I still did not manage to find the navigation tab. Then I clicked Window and tested cascade etc, but then I suddenly noticed that I had lost all my RDP sessions.

I tried Window> Reset layout but it did not work correctly. The Navigation > favourites tab contained blank bars instead of names and it all seemed messed up. (My favourites should be empty)
http://i.imgur.com/rvBGD.jpg is a screenshot.The Opened sessions tab did not contain the tabbed sessions that I had opened so I guess they crashed?

(RDM had been running for several days)

By the way, reset layout does not re-enable header pane. Not sure if it should do that but I would like that :) Took me a while to find out how to re-enable it.
edited by hal07 on 11/26/2012