Hello,
Since latest release of Firefox 37 and the 2.09 update of Firebug on Mac osx 10.9, the sourcemapping (for scss files in my case) return false:null in the Firefox debugger, and nothing in Firebug.
It works well in chrome, so i thing it could be a bug in latest release of Firefox.
Does anyone else has encountered this problem and found a solution ?
Thanks for your answers
Arnaud.