Colisionproblem

[damager200]

Any people know how to fix this problem.

I have a big building, when i walk on a special place on the building i fall to the ground like the picture here

Also here i stand and when i now go 1-2 meters in front i fall to ground... ?

And this

I can upload the building + mdatr if it helpfull?

[damager200]

PUSH
Nobody good enought to fix this ?