Fatal error: Call to undefined function: com_refresh() in /home/ertraininguk/public_html/geek/public_html/index.php on line 59 Any ideas anyone? cheers!

You REALLY need to go through that README again. The files all have to be in specific places, and you have to set a few parameters in lib-common.php and config.php to tell GL where these files/ folders are. Check all your paths, read over the install section of the README, and try again.