I downloaded a sandbox park in the download section, and all went fine but after about five minutes of playing with it, my computer crashes. I tried it several times, but it keeps crashing.

~Frank

Sorry I have no idea. Maybe the park is so big.
Even though what park is it?
Check how many MB it is. If its too high it can't run.
Sorry if that dosen't work I have no idea.
Just search in google.