[-CaRRoT]

PHP код:

if(IsATruck(newcar))//NEGERJO
        {
            if(PlayerInfo[playerid][pMember] == 0 || PlayerInfo[playerid][pLeader] == 1 || PlayerInfo[playerid][pMember] == 3 || PlayerInfo[playerid][pLeader] == 3)
            {
                else
                   {
                      new rand = random(5);
                    switch(rand)
                    {
                        case 0:
                        {
                            SetPlayerCheckpoint(playerid, Mission1, 3.0);
                        }
                        case 1:
                        {
                            SetPlayerCheckPoint(playerid, Mission2, 3.0);
                        }
                        case 2:
                        {
                            SetPlayerCheckPoint(playerid, Mission3, 3.0);
                        }
                        case 3:
                        {
                            SetPlayerCheckPoint(playerid, Mission5, 3.0);
                        }
                        case 4:
                        {
                            SetPlayerCheckPoint(playerid, Mission6, 3.0);
                        }
                    }
                }
            }
            return 1;
        } 


You missed 2.

EDIT : And what the above said - I didn't actually read the code - I just noticed the missing brackets.