map rebuild problems

[Jojo127]

converting sp to mp's

except im trying to get a secondary file from the map

like on a10 u have interior of the POA when i extract individual bsp i pulled the one for space is like a10/space a10 or something but when i rebuild i will get a exception eror or a un handled problem occurs,

I have made a few sp=mp maps but pulling these other bsp's doesnt seem to work, any suggestions?