[NEED HELP] YAY... error :(

Code:

[...]

compiling classes.c
xonotic/dialog_multiplayer_playersetup.c:1: error: Explicit precompiler usage wh
en not defined #ifdef
compiling oo/implementation.h
compiling classes.c
in function XonoticMultiplayerDialog_fill (line 3),
xonotic/dialog_multiplayer.c:23: error: Unknown value "makeXonoticPlayerSettings
Tab".
xonotic/dialog_multiplayer.c:23: error: type mismatch on parm 3 - (__variant sho
uld be entity)
xonotic/dialog_multiplayer_playersetup.c:1: error: Explicit precompiler usage wh
en not defined #ifdef

************ ERROR ************
Errors have occured

Error in classes.c on line 106
make[1]: *** [menu.dat] Error 1
make[1]: Leaving directory `/xonotic/data/xonotic-data.pk3dir'
make: *** [qc] Error 2
An error has occurred (see above).

error in the engine code? hmm?