[Pawn] Unknown Gamemode

[Snow]

My gamemode for some unknown reason fails to work. All plugins load, MySQL connection is successful, but number of vehicle models is 0 and the gamemode shows unknown in the client. Nativechecker fails to point out anything. However this mysterious thing might be the reason but I can't seem to fix it.

Code:

*** YSI Error: y_malloc with JIT requires "#define YSI_NO_HEAP_MALLOC"

*** YSI Warning: JIT disabled

[jit] Compilation was disabled

I tried putting?"#define YSI_NO_HEAP_MALLOC" in the script but this wont go anyway. What could be possibly wrong??