Error DS Game Maker

C:\DSGMTempNewProject33439371>make
Build process start for project "DSGMTempNewProject33439371"...
.
DSGMPro_Map.bin
DSGMPro_Pal.bin
DSGMPro_Tiles.bin
Default_Map.bin
Default_Pal.bin
Default_Tiles.bin
main.c
In file included from c:/DSGMTempNewProject33439371/source/main.c:6:0:
c:/DSGMTempNewProject33439371/include/GameWorks.h: In function 'Object_1Create_E
vent':
c:/DSGMTempNewProject33439371/include/GameWorks.h:20:3: warning: implicit declar
ation of function 'show_message' [-Wimplicit-function-declaration]
c:/DSGMTempNewProject33439371/include/GameWorks.h:20:3: warning: implicit declar
ation of function 'object_get_name' [-Wimplicit-function-declaration]
c:/DSGMTempNewProject33439371/include/GameWorks.h:20:61: error: 'object_index' u
ndeclared (first use in this function)
c:/DSGMTempNewProject33439371/include/GameWorks.h:20:61: note: each undeclared i
dentifier is reported only once for each function it appears in
make[1]: *** [main.o] Error 1
make: *** [build] Error 2

C:\DSGMTempNewProject33439371>pause
Press any key to continue . . .