Script problem or Impulse problem?

[Your Computer]

Should I move all my AddEntityCollideCallbacks to OnStart? What's the difference between OnStart and OnEnter?

If i understand things correctly, the difference deals with whether or not the user can save their progress. OnEnter will always be called regardless, and OnStart will only be called once if the user is allowed to have states saved (i.e. game saves), otherwise it should act as OnEnter.

BTW, have you tried spacing out "string&in" to "string &in"? Not sure if that makes a difference, though, as i've always had mine spaced out.