Collision map crash on loading

[bluetoast]

I've been spending some time flaming over a hot computer to get collision to work in 1.23. So far I've tried packet editing to try to fool the client into thinking I'm using the original map but that only goes so far. I managed to bypass the Sha-1 check but there seems to be another check on the map initialization the prevents the map from loading, when certain values set by the initial check is missing. This problem occurs the instant you join the game and it seems to wait for a packet from the host, but when i forge the correct packet everything starts freaking out. Any tech savvy people willing to show how do i trace back to the problem.