My screen locks up in MC v9.1 after I let it sit open for a while. I guess it's relative to either the sleep or screen saver but haven't had much time to play with it. When I come back to the comp and try to make a mod to the geometry nothing changes. I can't chain (at least visibly) any of the geometry, etc.

If I'm working in MC and don't walk away and allow the machine either sleep or screen save it continues to work fine so it's not just time related.

After it 'locks up' if I save, shut down and reopen MC (not a re-boot) it works fine again and I didn't lose anything in the shut-down re-start.

I'll be making the transition to win10 in the near future...that will be fun.....

JohnF