[TheAngryBird]

try removing the RETURN before SendClientMessageEx , just to see if the crash continue to happen.
it also could be the SendClientMessageEx that cause the crash.
try with SendClientMessageFormatted();
it has the same parameters than SendClientMessageEx so just replace SendClientMessageEx with SendClientMessageFormatted , not the whole line.

Код:

stock SendClientMessageFormatted(playerid, color, fstring[], {Float, _}:...)
{
    static const STATIC_ARGS = 3;
    new n = (numargs() - STATIC_ARGS) * BYTES_PER_CELL;
    if(n)
    {
        new message[344],arg_start,arg_end;
        #emit CONST.alt        fstring
        #emit LCTRL          5
        #emit ADD
        #emit STOR.S.pri        arg_start

        #emit LOAD.S.alt        n
        #emit ADD
        #emit STOR.S.pri        arg_end
        do
        {
            #emit LOAD.I
            #emit PUSH.pri
            arg_end -= BYTES_PER_CELL;
            #emit LOAD.S.pri      arg_end
        }
        while(arg_end > arg_start);

        #emit PUSH.S          fstring
        #emit PUSH.C          144
        #emit PUSH.ADR         message

        n += BYTES_PER_CELL * 3;
        #emit PUSH.S          n
        #emit SYSREQ.C         format

        n += BYTES_PER_CELL;
        #emit LCTRL          4
        #emit LOAD.S.alt        n
        #emit ADD
        #emit SCTRL          4

        if(playerid == INVALID_PLAYER_ID)
        {
            #pragma unused playerid
            return SendClientMessageToAll(color, message);
        } else {
            return SendClientMessage(playerid, color, message);
        }
    } else {
        if(playerid == INVALID_PLAYER_ID)
        {
            #pragma unused playerid
            return SendClientMessageToAll(color, fstring);
        } else {
            return SendClientMessage(playerid, color, fstring);
        }
    }
}