Well.. i have a problem..
for Face 167 (texture wall_yellgrey01) at
(504.000 1310.000 3545.000) (702.000 1310.000 3545.000) (702.000 1310.250 3545.000) (504.000 1310.250 3545.000)
Error: Bad surface extents
and i cant find that that face, i have tryed the "Check for problems" feature and it found nothing, i wonder if someone could help me fix this, you need NS.wad and NS2.wad (Natural selection wads)
http://cariad.co.za/twhl/mapvault_map.php?id=1051