rofl ur jumping onto me instead of reading the error properly urself:
Code:
Entity 0, Brush 28: A 'Unknown Class' @(0,0,0) has a coplanar plane at (249, -1249, 128), texture TEX_RED
Entity 0, Brush 28: A 'Unknown Class' @(0,0,0)
outside world(+/-4096): (-9000, -9000, -9000)-(249,-1195,336)
it says that the brush is complanar and then streching it into outside world and making the map leak.
i now remember that i once had a problem like this. but i think i had it as a texture problem, not sure... anyways, try to redo the 28th brush and see if it still happens.
trust me, those compilers/editors sometimes fux up ur map pretty bad.