[Lorenc_]

pawn Код:

if(dialogid == DIALOG_MDCNOME3)
{
        new count = 0, masterstring[1024], tmpstring[128], line[128];
        format(SkillBase, sizeof(SkillBase), "LSPD/Suspects/%s.ini", inputtext);
        new File:arquivo = fopen(SkillBase, io_read);
        while(fread(arquivo, line))
        {
            count ++;
            format(tmpstring, sizeof(tmpstring), "%s%s\n", tmpstring, line);
            strins(masterstring, tmpstring, strlen(tmpstring));
            if(count == 20) break;
        }
        ShowPlayerDialog(playerid, -1, DIALOG_STYLE_MSGBOX, "-", masterstring, "Ok", "Fechar");
        SCM(playerid, -1, masterstring);
        return 1;
}

Try that.

Edit: Change the goddamn Dialog ID, set it to 'NULL (0)'