.Map :: MoHAA Mapping

Damn, the authors don't make this mapping thing easy do they?!
Right, here is my problem which I have searched for in the forums but do not seem to be able to find...
Originally I was using the original MOHRadiant and testing on MOHAA but now I have switched to the SDK versions. Now if I want to test a map it is ok when I select 'Single player' in MBuilder but if I select Deathmatch/Round based it crashes me back to the desktop half way through. What am I doing wrong? I've tried adding various spawn points etc but to no avail. Thing is, it lets me do it with the original MOHRadiant and MOHAA.
Could somebody tell me what stupid thing I am doing wrong please?!
Thanks.

Ok, I've now found that as long as I've copied my .bsp file into the DM folder in my MAPS directory I can start my map from the multiplayer section of the in-game menu - no problem. But stiil, If I try to start the map through MBuilder (replacing MOHAA.exe with MOH_spearhead.exe) It comes up with a warning about sanitizing name for client 0, says something about sound and TIKI and then crashes back to desktop.
What gives?
Also, can somebody tell me why if I start a deathamtch up with the map, when it comes to selecting Allied or Axis there are no player models in the selection box. A little thing I know but annoying.
Thanks in advance to anyone that can help me.

Turn off force models and select one from the list for allied and axis. Spearhead uses different model skins and the files are in mainta. Switch back to mohaa, spearhead sux, ha ha.