If you can send (email: firstname.lastname@example.org
, referencing this post) or paste in this forum the stack trace that's causing the problem with some contextual information explaining what you are trying to do at the time we will try to identify the issue with this unsupported OS. The more information we have about the circumstances surrounding the problem the easier it is for a solution to be found.
The log file might be in a directory akin to the following if it's similar to Vista:
C:\\Users\\Your Name\\AppData\\Local\\Red Gate\\ANTS Performance Profiler 4\\