[Fabio11]

pawn Код:

else if(!strlen(inputtext))
{
    ShowPlayerDialog(playerid,dregister,DIALOG_STYLE_INPUT,"Register","Welcome! This account is not registered.\nEnter your own password to create a new account.\nPlease enter the password!","Register","Quit");
}

If he writes nothing you send him register dialog?

Have you given "PlayerInfo[playerid][Pass]" any value before this?