[Dayrion]

Maybe the line is too long. Try to split your SendClientMessage in 2 SendClientMessage.

PHP код:

SendClientMesage(playerid, -1, "There is a loooooooooooong message"); 


to

PHP код:

SendClientMesage(playerid, -1, "There is a ");
SendClientMesage(playerid, -1, "loooooooooooong message");