RW 7 Quits while opening projects

If I start RW (I am using RW v7) I goes through all the motions and shows that it is opening the last 2 projects I was working on. Once it has finalised the opening of the projects, it becomes unresponsive and after several seconds just quits without even indicating why it died. I thought it might be a dodgy stack or control, but the project(s) were working just fine the last time I worked on them. Any ideas?