I have played the game for days and it has run smoothly but today when I launch it the main screen displays no menu entry, absolutely nothing, no Loading, settings etc.

I started this replay with a fresh install of 2.3 and mods. But as I said I have been playing for days without any issue. I have played since the start with the same mods and they were also not updated.

I have tried the obvious reboot and Verify/repair.
Also tried the Internet Read Only unchecked and tweaked.bin

But no chance..

Any idea?