[Serusers] error on 0.9.0 ext module

Hi All, I'm trying to install 0.9.0, I had some problems compiling: ext and extcmd is not getting compiled. Are these modules critical? This is the error on ext modules: ext.c: In function `ext_rewrite': ext.c:340: warning: passing arg 4 of `append_branch' makes pointer from integer without a cast ext.c:340: error: too few arguments to function `append_branch' make: *** [ext.o] Error 1 This is the error on the extcmd.c extcmd_funcs.c: In function `tuac_callback': extcmd_funcs.c:327: error: structure has no member named `cbp' extcmd_funcs.c:336: error: structure has no member named `cbp' extcmd_funcs.c: In function `send_sip_req': extcmd_funcs.c:435: warning: passing arg 7 of pointer to function from incompatible pointer type make: *** [extcmd_funcs.o] Error 1 Thank you in advanced nhadie