[5./KG53_Löwe]

I've tried searching for a solution for this problem on the forum but I haven't found it so here it goes.

I recently installed UI 1.2 and since then the FMB is not working properly.
When I load a mission the map shows up with all the objects, waypoints etc. etc.
but the "Please wait - mission loading" window is still showing and when I close it
I can't to anything with the mission. I can't even press the "Fly" button.
Any ideas what could have happen?

Thanks in advance
/L