Cannot debug JS files with sourcemaps

Hi,

I've been trying to debug javascript files with associated sourcemaps but it doesn't seem to work. I am using WebStorm 10.0.3. I have put breakpoints on the original source file but they are never hit.

I am using this example which is supposed to work, so I am wondering whether sourcemaps is broken in the latest release:

https://github.com/ZigGreen/webstorm-browserify-example

Chrome is able to use the sourcemap files just fine (I can set breakpoints on the original source files).

Any ideas what could be wrong?

Thanks