I got "OTS parsing error: invalid version tag" ?

[hojas]

Follow the doc:

Compass without Rails

Install the gem

gem install font-awesome-sass
If you have an existing Compass project:

# config.rb:
require 'font-awesome-sass'
Import the FontAwesome styles

@import "font-awesome-compass";
@import "font-awesome";

I got OTS parsing error: invalid version tag ?

[mindvox]

I am getting this with the less version on a Heroku deployment. What's odd is this doesn't occur on a production or development deployment, it's specifically on our Heroku staging deployment.