Nope, that's not it. The thok barrier is 1000 in both its Floor and Ceiling values. This floor is roughly 570 and 2000 as its ceiling.Are the Sector's heights higher than the Thok Barrier's heights? This is a fairly common problem.
Raise the Thok Barrier that the Sector is connected to so its floor and ceiling heights match the cliff's.
Nope. I actually rebuilt that sector into there several times to see if that'd fix it, and removed any previous sectors. (If there's one still in there, then Doom Builder's lying to me about there being only one sector. >_>)Probably you moved a sector into another. Let me look in it...
Ack! So simple. Vertex 49 wasn't stitched well. Just click on it and stir slightly. SRB2DB will remember that vertex needs to be stitched. And don't forget to turn "Stitch Vertices" on first.
EDIT:
And don't need to bow before me. ;D
Oh... Wow I went overboard on that one. -_-