The update from gridiculous.188.8.131.52 to gridiculous.1.0.8 included far more changes than those to class names, it also included changes to function names.
I've more than a few sites running child themes based on Gridiculous. This update has put me in the uncomfortable position of having to admonish users with admin access not to help by updating the Gridiculous theme.
For now I keep a backup of gridiculous.184.108.40.206 handy, so I can quickly back-date any site that gets updated...
Should you find yourself dealing with this issue, you can pull an archived version of the theme from the svn repository.