Odd lump size.. what is this error?

(twt_thunder) #1

when trying to vis compile I get this error: what is this?

************ ERROR ************
CopyLump: odd lump size (1293960534) in lump 17
(twt_thunder) #2

well, dont know if this was the solution, but I first used the sunplug in 1.5 to set map cordinates. Then I got this error.
Checked the map cordinates and it was wrong. So I changed them manually and voila it works.