I tried adding a user to the old database with the same name/pass as the new joomla but no luck.
Here's the 1st 20 lines of the export if it helps at all;
-- phpMyAdmin SQL Dump
-- version 3.4.5
--
www.phpmyadmin.net
--
-- Host: localhost:3306
-- Generation Time: Aug 09, 2012 at 10:35 AM
-- Server version: 5.5.14
-- PHP Version: 5.3.8
SET SQL_MODE="NO_AUTO_VALUE_ON_ZERO";
SET time_zone = "+00:00";
/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
--
-- Database: `spikemobile`
--
CREATE DATABASE `spikemobile` DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
USE `spikemobile`;