Having this in a CSS file will cause prefixr to fail.
Re: Prefixr fails when @import is used.
Posted: Mon Mar 18, 2013 8:51 am
by TopStyle Support
Prefix is returning an internal server error. I'm not sure why this is the case. I have reported this problem to the Prefix people. In the meantime, TopStyle is going to include the HTTP status code with the error message.