I didn't see this with the binary I'm currently uploading on another machine, but after updating from SVN it seems ufo2map.exe doesn't like /textures/tex_buildings/wall014.tga, reporting it as a type 255, saying only type 2 and 10 targa RGB images are supported.
This error causes base/maps/farm.map to not compile at all.
Apologies if this was just fixed already.