I was having some trouble while using compass and Zen Grids, while dealing with
$zen-column-count variable in a Drupal theme.
If you are having the same problem, it's due a recent change in compass' way of dealing with variables. Now, if you need to use a variable throughout some included files, you have to postfix it with
So, it was:
And now it should be:
$zen-column-count: 12 !global;
Hope it helps someone else.