Installing compass extension fails

#1

Heyo! I’m trying to install a Compass extension to my Middleman site: https://github.com/timhettler/compass-flexbox.
I’ve gem installed compass-flexbox, and required it in my config.rb. When I compass install compass-flexbox I get the lovely response:

NoMethodError on line ["264"] of /usr/local/var/rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/compass-0.12.2/lib/compass/configuration/inheritance.rb: activate

Digging around a bunch on google yields nothing. I finally tried creating a new Compass project, independent of Middleman, and the installation of the compass extension worked flawlessly.

When I came back to my Middleman project, same error.
Any ideas what could be happening? The word activate at the end of the error sometimes changes to other words. yesterday it was page.

Thank you!

###Edit

Here’s a follow up. I just made a brand-spankin’ new middleman project and followed the install steps for compass-flexbox.

Here’s what I got back:

NoMethodError on line ["264"] of /usr/local/var/rbenv/versions/2.0.0-p247/lib/ruby/gems/2.0.0/gems/compass-0.12.2/lib/compass/configuration/inheritance.rb: set
#2

We don’t support compass extensions.

However, since these extensions are just a handful of sass files, you can open the gem (or download the repo) and copy those files into your Middleman project.

Middleman and Companimation
#3

Oh! Good to know, thank you @tdreyno. Did I miss somewhere in the documentation that compass plugins don’t work?

Thanks again for the awesome project.

#4

Is there a solution for this? I ran into the same issue with compass and foundation?