I decided to use Fantastico to take my Druapl 6.07 to 6.10 this evening. After following the instructions in Fantastico I had a nasty scare when the Drupal website failed to come back up.
To fix it…
1. I needed to save my theme again. Go to the Admin -> themes. Choose to configue the theme you have previously used.
2. I then had to update any php scripts that I had changed including user-profile.tpl.php. The thing that got me scratching my head however was that Drupal needed to be told to override the default user profile layout and rebuild the theme registry, which can be done by clearing the caches (for example using the button on the admin/settings/performance page), or simply by visiting the admin/build/modules page