I think you need to run it as admin. I don't think it was the Windows XP compatibility problem. I just did it just in case
Edit: Two things
- If you could make it so that each vendor gets two focus points to set, one at their head and own at their waist or something, and then one to the the left edge of the browse goods and then right edge. Then you can make the X or Y coordinate a random value in between so that people aren't clicking the exact same points for hours.
-Make a pause script hotkey to go along with the start and exit hotkeys.