Kicad freeroute reports 'unable to launch application'

Software
1

Hi,
I’ve use Freeroute.jnlp before. Now it won’t open and reports ‘unable to launch application’. Does anyone know why?
C.

2

I’ve just tried running this fork. It seems to work for me. Using OpenJdk 1.7 in linux.

3

Hi,
If this is for me,. I’m not too familiar with Linux, but i’ll look into it.
Thanks C