Drupal 7.10 upgrade theme problems I was running with Drupal 6.22 and tried doing an upgrade to drupal 7.10.
The upgrade reported everything was successful.

My problem is that I was previously using a theme called 'contrast'.
I thought that I had disabled it, but it now has references to that theme.

How can I get around these errors?

I tried moving garland into the all/themes folder and renaming it to contrast, but that only created another set of errors.

Notice: Undefined variable: site_name_and_slogan in include() (line 14 of   /mysite/sites/all/themes/contrast/page.tpl.php).
Notice: Undefined variable: site_name_and_slogan in include() (line 14 of /mysite/sites/all/themes/contrast/page.tpl.php).
Chose another default theme, disabled &amp; deleted the 'contrast' directory. Clear your cache to make sure, but there should be nothing trying to reference a theme that isn't there.