A big tip for the Drupal Theme developers: If you happen to design a theme that doesn't have a content_drupal layer, or a left_drupal layer (for the default blocks/regions settings), or in any way are not able to administrate your Drupal theme anymore due to a theme that doesn't show the admin controls, you can regain control of your Drupal install by deleting the psd2css folder in sites/all/themes and visiting your site again. It will look terrible (completely CSS and layout free text), but you will have access to everything including the admin section.
At that point you have a number of options: You can redesign your theme to include important regions (content_drupal and probably left_drupal), or you can edit your admin user within Drupal and select one of the default themes just for the admin user. Then all other users including anonymous will get whatever theme is select globally, but you'll always have the default them for admin to do admin stuff with.
Another cool option is to install the Admin Menu module. It creates a very small but complete drop down menu system from the top of your drupal site and you can admin anything you need from there.
I hope that helps. Let me know if you have any questions. Thanks.
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Shaun
Thanks
Thanks for this tip, it helps if you make a mistake naming your layers...
What I used to do is put another theme in that folder. It works too, but just deleting it is easier :-) .