I am sorry, but i have already run the repair tools from the QB Tool hub several times.  Every time the software crashes, i do that.  I've run every component of fixes on the QB tool hub.  Even made sure i have the most current version of the QB Desktop file doctor as well as the tool hub. Like i said several times.   This crash and close down does not happen all the time.  It's very sporadic now but you never know when it will just decide to close.  Good thing all your work is saved as you are doing it otherwise this nightmare would be horrendous.  It is so annoying never knowing when you are going to close up.  Frustrating to say the least