It's hard to say without seeing your project but It sounds like an infinite loop.
If it's an infinite loop, the two events that have the most potential to cause an infinity loop are:
Event = 8
Event = 11
Your Tile size looks like is = 48x48
Your player most likely is 48x48 swell
If that is true when the player is standing on the tile next to the door will count as overlapping.
1-On overlapping door "LVL1_Door4" you send the player to (384,144)
2-If the Door that is on the next tile of (384,144) is the "LVL1_Door"? Then because it counts as overlapping you have "Event 8" sending the player back to (624,336) which is next to "LVL1_Door4" and because again it counts as overlapping it will send it back to "LVL1_Door".
So this keeps going infinitely.
This is just guessing as I cannot see if (384,144) is next to "LVL1_Door".
You can confirm if this is true by making the Player collision box a few pixels smaller, like 46x46 and see if it works.