I had closed B4. Then a little while later i tried to open it again (i always use the Ctrl key). The L4 logo showed, but it never opened. i open the task manager after a couple of minutes, it showed that L4 was running OK. So i eventually used task manager to shut it down. (very strange seeing just the L4 logo on the middle of the desktop, never saw the sign-in screen).
8551.Logos4 (7).zip
Edit: tried to do this again, same results. In task manager under applications, it showed one one instance of L4 running. But i looked in task manager under processes showed 3 instances of Logos4.exe running (this means that the original instance did not close properly, the original one i had shut done several minutes earlier). So i started closing down each instance in the processes, after shutting down the 2nd of 3, L4 opened (the 3rd instance in the processes).
Don't know if this helps???