Split from this thread.

I installed the Office for Mac preview. I already had Office Mac 2011 installed and running. Sadly when I opened Outlook it took a long time to set up. I am connected to work exchange server with a lot of email in the account.

It crashed. It wouldn't reopen.

I tried then to use my old 2011 version of office and also no longer works. Tends to work the first time after a restart, but after sleeping the computer and waking again office fails to run. The dock icons bounce but close, no error dialogues. 

I removed the office preview. I removed office 2011 then reinstalled it but still I have the issue.

I'm now a bit stuck. Any ideas anyone ?