I have had this happen several times now- see pic of desktop:

This is not the normal desktop screen and when I try to exit or quit program is unresponsive, I have to go to task mgr and force it to close. It now is starting to affect even that process by not allowing TM to close. I have had to power down the PC to get out of Logos.
Here is the only error file dated for today:
6232.LogosError.log