I get the last revision 25391, when making maps (make maps) I get this error:
[compile] maps/farm/f_farmhouse_a.map
./ufo2map(Sys_Backtrace+0x1c)[0x44d164]
./ufo2map(Sys_Error+0x92)[0x44cb35]
./ufo2map[0x41b334]
./ufo2map(LoadMapFile+0xb5)[0x41bae1]
./ufo2map(main+0x4e5)[0x4094cb]
/lib/libc.so.6(__libc_start_main+0xe6)[0x2b7f1ac615c6]
./ufo2map[0x407019]
Error: The first entity must be worldspawn, it is:
make: *** [base/maps/farm/f_farmhouse_a.bsp] Error 1
I'm on linux X86_64 and I've never got similar errors with other revisions.