I'm on Beta channel. Had to use Task Manager (Windows) to kill it multiple times. Tried Ctrl+click; same results.
How do I get Logos to restart again?
Restart your PC, then start Logos with keeping CTRL pressed (simply ctrl-clicking will not do!). This will probably ask you to Log in, and it will start to an empty layout - this usually fixes things.
If not, you will find diagnostic logs at the defined place (see http://wiki.logos.com/diagnostic_logging ) and you can upload those here (or send them to Customer Service if you prefer) and people may be able to help you further.