Well I've been nosing around and I think I see where the commented out line is in Collision.bmx. when I uncomment the if statement and return all the collisions seem freak out a bit. the collisions are all pass through rather than solid, but sometimes they hang up... i.e. and object will pass through another and then get stuck trying to come out the far side. those are response response type 1 collisions. and it doesn't always happen. it seems to happen more in tight corners.
my assumption is that the response type isn't actualy being stored per collision set, so it's all going to 0 all the time, and since it now returns 0 type collisions without doing anything then no collisions happne... but that doesn't explain the occasional getting stuck... I don't fully understand how the system works but I'll keep poking, if anything comes to mind as to where I should be looking let me know, if I can get it working I'll post it and hopefully save you a little work.
my assumption is that the response type isn't actualy being stored per collision set, so it's all going to 0 all the time, and since it now returns 0 type collisions without doing anything then no collisions happne... but that doesn't explain the occasional getting stuck... I don't fully understand how the system works but I'll keep poking, if anything comes to mind as to where I should be looking let me know, if I can get it working I'll post it and hopefully save you a little work.