VC++ Runtime Error

I have been using AutoGK for a while now to convert my mpeg videos into AVIs. Everything works fine till yesterday. When I tried to convert my vidoes, I got VC++ runtime error. I was scratching my head for a reason since I had just used the program a week again, and nothing had changed. It turned out it was caused by corrupted VC++ runtime library ... don't know how it happened ... Anyway, after I have reinstall the VC++ runtime redist from Microsoft, everything back to normal.