Our site crashed due to disabling magic_quotes on our server and after a lot of mucking around our site is back up again but for some strange reason all the navigation tabs in our admin panel are missing except for the home tab.
Any thoughts on why this may occurring and how to get the navigation tabs back again?
Not sure why disabling magic_quotes would crash your server ("This feature has been DEPRECATED as of PHP 5.3.0 and REMOVED as of PHP 5.4.0.") but have you tried clearing the cache?
Try to delete the var/cache directory manually