I was having the same problem, with Co shutting down. This is what I did:
I opened the Emulator which , the icon is a circle that has a rubix cube type image on it.
Then, INSTEAD of opening the TQProgram(Emulator), I clicked the normal TQProgram. Not the TQ Emulator. And, I've had no issues since.
For those of you who would like to know what version of Service Pack you run, simply right click My Computer and, go to Properties. Right on that first page there, it will tell you at the top, what SP you run.
Hope this Helps