[Mauzen]

pawn Код:

RNPC_CreateBuild(npc[0], 0);
    RNPC_CreateBuild(npc[1], 0);
    RNPC_CreateBuild(npc[2], 0);
    RNPC_CreateBuild(npc[3], 0);
    RNPC_CreateBuild(npc[4], 0);

Create builds one by one, not all at once. Build mode opens a file that is closed on FinishBuild. Doing it like this it will open several files with the same scope and that causes the crash.
So it should be

pawn Код:

CreateBuild(npc[0], 0);
code for npc[0];
FinishBuild();
CreateBuild(npc[1], 0);
...