[marharth]

put
new playername[24];
new string[56];

inside of the dcmd_fail

like this...

Код:

dcmd_fail(playerid, params[])
{
    new playername[24];
    new string[56];
    GetPlayerName(playerid, playername, sizeof (playername));
    format(string, sizeof(string), "%s failed!", playername);
    SendClientMessageToAll (COLOR_RED, string);
    return 1;
}

EDIT: Also change dcmd(fail, 1, cmdtext); to dcmd(fail, 4, cmdtext); seeing as fail is not 1 letter