How do I fix this problem?!

I don't know if it's because of a C2 update along the way, but now my player character cannot move at all on the overworld screen. Please someone, help me out! I haven't changed a thing in my code since I got everything working ages ago. Last time I really worked on this project was about three or four months ago, was adding levels. I haven't touched the code because it's always worked, and now when I get to the overworld everything doesn't work anymore!

(Yes, this is a Zelda 2 clone, and no I do not intend on keeping it as such. It's merely a base engine for a future game, and people are welcome to use the code presented here as a starting point for anything they want to do...provided it actually works lol)

http://www.mediafire.com/file/t0gl5x4cuqd908i/zelda2upload.capx

The events stopping you from moving are the event.x,event.y checks. Not sure what these do, probs checking for terrain. If you disable them then the character can move so have a look around what that event object is overlapping I guess. There's a hell of a lot of stuff in there but this is the main thing I could see going wrong.

Thank you very much, I know where to go from here. Thank you