[Mauzen]

26 undefined symbol errors usually are caused by an unnecessary bracket }
It closes a function too early, so everything after it is messed up.

In your case the extra bracket is here:

pawn Код:

public StartSMission(playerid)
{
 if(TypeSail[playerid] == 1) // Coastguard
    {
        StartedSMission[playerid] = 1;
        new rand = random(sizeof(SCLocations));
        new string2[65], message[128];
//LINE3981  BELOW
    SetPlayerSailCheckpoint(playerid, SCLocations[rand][LocX],SCLocations[rand][LocY],SLocations[rand][LocZ], 15.0);
        format(string2, sizeof(string2), "%s", SCLocations[rand][LocationName]); //PASSWORD
        strmid(FirstSName[playerid], string2, 0, strlen(string2), 128); //PASSWORD
        //FirstAPName[playerid] = ALocations[rand][LocationName];
        //FirstAPName[playerid] = AndroDName;
        format(message,sizeof(message), "Head to {1B8AE4}%s {FFFFFF}and pick up the cargo goods.", SCLocations[rand][LocationName]);
        SendClientMessage(playerid, COLOR_WHITE, message);
        TypeSail[playerid] = 1;
        MissionSStage[playerid] = 1;
        WantsRecording[playerid] = 1;
        Pos1[playerid] = SCLocations[rand][LocX];
        Pos2[playerid] = SCLocations[rand][LocY];
        Pos3[playerid] = SCLocations[rand][LocZ];
    }
//} // the function is closed here, but theres more code after it
    new Float:DistanceCheckS;
    new Float:SP1, Float:SP2, Float:SP3;
    GetPlayerPos(playerid, SP1, SP2, SP3);
    DistanceCheckS = GetDistanceBetweenPoints(SP1, SP2, SP3,Pos1[playerid],Pos2[playerid],Pos3[playerid]);
    DistanceSail1[playerid] = floatround(DistanceCheckS, floatround_round);
    return 1;
}

If you indent the code correctly you should normally notice bracket problems, as that bracket clearly is on the same level with the function header and so closes it.