Open Building After updating to 10.10.00.199 version

Hi Guys, 

I just want to ask for any suggestions or comments on what to do, I recently updated my software 2 0r 3 days ago. New version was nice but I am having issues to the new version. My opened files is always closing on its own. Luckily i have a save on exit setting. But what if I don't have? All the works that I created will be gone when it close on its own. 

Thank you and hoping someone can extend a hand in helping my problem.

Maria