As a lot of people know, the editor isnt perfect. (Thats understandable) Sometimes if you do things like changing the amount of players part way into the map your making, it can cause triggers to just stop working, and sometimes it can affect any triggers tied to the original ones affected by the "fire event" trigger. Well here is a simple way to ensure that your project stays working. Every now and then, instead of using a "fire event trigger" to go to a new thing, use the "unit create/army deploy" trigger, and create a unit that you plan on only having one of in a map. Then for the condition for your next trigger just use "Player unit count" and the unit you made. This will fire the event without directly connecting the triggers, so if some triggers ever stopped working it wouldent affect as many in a chain reaction like way. (And yes the chain reaction thing can happen, it has happened to me, and a few other people I know, instead of deleting the triggers up to the point when they stopped working, you have to delete all ones that were connected in any way by "fire event" before things start working again) This is useful when making a very large scenario because you dont have to worry about one thing you do screwing up a 50 triggers, setting you back weeks.