Alrighty people, I've had a texture problem someday just now, but now that it's solved, another problem kicked in. See, I was compiling my map with only BSP -meta just to see if the brushes in the map are working correctly and stuff. When I tried to compile it as (Test) BSP -meta -vis -light -fast -filter, the compiling progress was stuck on PassagePortalFlow and it compiles more then half an hour, see the picture yourself : I found another topic that had same issue as me ( https://jkhub.org/topic/2492-compile-taking-ages/ ), but someone else had found the error for him apparently and he got it fixed. Would any of you expert mappers care to do the same for me? I worked my ass off on this map, I wouldn't want it to go to waste... I've already lost a few hours trying to fix it.