[iggy1]

You can't use the same number on different cases.

pawn Code:

switch(newexperience)
{
    case 1000..2499: SetPlayerLevel(playerid, 2);//These 2 are now ok
    case 2500..4499: SetPlayerLevel(playerid, 3);
    
    
    case 4500..7000: SetPlayerLevel(playerid, 4);//7000
    case 7000..10000: SetPlayerLevel(playerid, 5);//and 7000 are duplicates (not allowed)
    
    default: SetPlayerLevel(playerid, 1);
}