I just tried opening Logos this morning and all I get is the Blue logo for a moment and then nothing.
Tried this a few times.
Does restarting your computer resolve this?
If not please enable diagnostic logging and post logs after a failed startup attempt - details at https://wiki.logos.com/Diagnostic_Logging
Restart doesn't help.
Here are the logs1856.Logos Log Files.zip
Your logos.log file hasn't been updated for a couple days, but you have a crash text from today. Unfortunately it is beyond my diagnostic capabilities. Have you tried starting to a blank layout? Press and hold the control key immediately upon startup.
The logs suggest some sort of network issue - reporting that the network address has changed.
What happens if you physically disconnect your computer from your network and try to start Logos. Does that work?
If it is linked to network changes, then you are not on your own:
https://community.logos.com/forums/p/131602/876702.aspx#876702
The support team is working on it.
I've tried the CTRL and nothing. I tried to disconnect my network and nothing. Maybe it's what Armin pointed out.
Hope it gets fixed soon.