Tessitura randomly crashes

I've been having a problem for a few weeks now, where the tessitura client will randomly crash. I'm not able to recreate it. When a user recreates the steps it took to have the crash, then tessitura will sometimes crash and sometimes it won't.

I'm running terminal services, specifically server 2008 remote apps. I've tried this on xp machines also and got the same results. I've recently tried setting up a new server with nothing installed but windows updates, microsoft office 2007, and tessitura to rule out the possibility of antivirus or some other program conflicting with tessitura. most of the crashes seem to happen around subscription orders, but that's also because that's where most of the owrk is being done now.

Has this happened to anyone else and does anyone have a solution?