I see this notice when the book module is not enabled:
Notice: Undefined index: modules/book/book.css in sky_css_alter() (line 134 of /sites/all/themes/sky/template.php).
Enabling the module seems to be solving the problem.

Comments

I get the same error message after I updatet to the latest version of Sky.

Getting this error also.

Error:
Notice: Undefined index: modules/book/book.css in sky_css_alter() (line 134 of xxx/drupal-7.0/sites/all/themes/sky/template.php).

Reproduce:
Install Drupal 7.0
Install Sky Theme

Workaround Fix:
line 134 of /sites/all/themes/sky/template.php
if ($css[drupal_get_path('module', 'book') . '/book.css']) {
add @ to have:
if (@$css[drupal_get_path('module', 'book') . '/book.css']) {

That fixed it. Thank you.

Status:Active» Fixed

Status:Fixed» Active

Why did you change the status back to active? The problem is obviously fixed.

Status:Active» Fixed

A fix has been committed to the HEAD. It will be in the next release.

http://drupal.org/cvs?commit=496446

Why did you change the status back to active? The problem is obviously fixed.

@geoffreyfishing I am the only one with commit access to this project. Until I fix the problem it's still broken for everyone else. Also, the comment in #3 is not the correct fix.

Status:Fixed» Closed (fixed)

Automatically closed -- issue fixed for 2 weeks with no activity.