display error and problem using CC in fullscreen

[pontoontodd]

I verified I have latest intel drivers and the function keys did not help
I went to registry and blew away data for both "mainwindow...." values under Computer\HKEY_CURRENT_USER\Software\CCCorp\CloudCompare leaving the value itself /setting still there. That is simple and worked .
One could research to see which of two you need to change but had just started and so did not have favorite settings

Thanks for the tip! I was having this problem (menu commands not responding), deleted the mainwindow values from my registry (regedit) and it's back to normal.