New Link for KF-Small Forest
http://www.mediafire.com/?5a9yl3aonuu1f3iNice looking map and your first map, to my knowledge. Not bad work so I did some fixing for you and I hope that's ok with you. If not, I'll remove this download link.
*Visually the map is pretty much unchanged.*
Here are problems I fixed:
1/ Zombies didn't spawn. Reason: you changed the settings of the zombie volumes - always leave them at default settings.
2/ Zombie spawns were visible to players so even if zombies spawned, it would only be occasionally. Multi-player and single are very different. If any player can see a zombie volume, 99% chance no zombies will spawn from that volume. Static meshes do not really block visibility, well, the UT engine doesn't think so. BSP will block, so the major group of spawns inside the static mesh building would not have worked in multi with a lot of players in the map.
3/ Pathing was quite poor. To view paths right click above editor 3d window and click view > show paths. You needed to path all around those trees and behind them. Also various other areas were not pathed, which I fixed.
4/ Besides the tree house with xbow unpathed, the door isn't wide enough for large zombies. Place the fleshpound in your map to check your door widths. To fix the narrow door problem I placed 'forced path' from navigation so large zombies can get into the tree house.
5/ There were a few obvious glitch points so I changed parts of the map slightly to fix those.
6/ The trader area was very small, I moved the trader/her table to the rear of the shed.
To get around the problem of visible zombie volumes - rather than altering your map's look, I placed spawn points beneath the map, then teleports for the zombies.
But also generally there's problems with zombies falling through 'terrain,' so now in my own maps with terrain, I place paths and teleports for the zombies to get back to the surface.
Download the V2 and check it out. PM me or reply here if you want any help.