When I got the font from SymbolSet I was really excited to drop it into my interface but found many of the classes did not work. It looked like an encoding issue (since using the in line versions worked). Upon replacing all 570+ UTF-8 characters with their unicode values ever single one of the characters worked with their classes!
There were some issues with older browsers and longer unicode values (that really should be two combined values) that were corrected in this version in May 2014. Also added all the new icons added in April 2014.
It’s a great font – you should get it if you haven’t already. For those of you wishing the included css file worked better in your web-app feel free to lift the code below.