I've been having trouble with LibreOffice starting. I'm running Ubuntu 12.04, and I have two different user accounts on my computer. LibreOffice used to work fine, but for the past few days I can only use LibreOffice (calc, writer, or any of the programs) when logged in as one of the users. When I'm logged in on the other account if I click on the launcher icon it just blinks and does nothing.

I also tried launching LibreOffice in several ways and nothing seems to work. I tried from the dash and from a terminal. If I was logged in as User1 (where LibreOffice works) and then I use a terminal to su as User2, running LibreOffice as User2 from the terminal still doesn't work.

Any ideas what could be causing this?