My server was up for roughly 2 weeks without a problem.
2 weeks straight is most likely the problem:
My TDM only lasted 3 days at a time
My Minicity has lasted almost 30 days before crashing
Heedicalking's lasted less than a day before crashing
There is nothing I can do about it; trial and error with add-ons. The console has said nothing pertaining to the error.
Just save often.