Okay, so I was having problems with my Miletracker (downloaded the newest version) running Vista.
After installation, the program would run fine once, and only when installation was complete, the program would ask if I wanted to run it. Fine. After closing the program following installation and attempting to run the program, it would not load. Seemed to me that if I ever wanted to run the program, I would have to reinstall it every time.
Figured it out today that if I run the program as "Administrator," (i.e., right click, "Run as Administrator), it runs fine. Must be another one of those Vista bugs...