Gonna look into that today, I suspect the door animations but it's really hard to diagnose that, especially on my own.
EDIT: I think I found it, I'm not packaging onCollide properly oops
EDIT 2: Changed the download to a fixed version. Removed sound and horn, removed door animations. Double check if it works now, because I think this should have fixed it but I can't verify on my own obviously.
Added benefit is that the filesize is reduced about 35 times from 1.6MB to 43KB so yay. Also reduced datablock count from 13 to 2.