SuperChromix came up with a solution on the other newsgroup
I managed to fix this problem.
I tried several things, including setting up SSH keys with my Github account, but this didn't seem to solve the issue.
Next, I renamed the JRE folder here:
C:\Program Files\Exelis\IDL85\bin\bin.x86_64\jre
to "jre_old". I then created a new "jre" folder, and copied an installation of Java Runtime Environment 1.8.0.161 into the JRE folder.
After restarting IDL, the Github problem was resolved.
THe only thing different I had to do was for some reason windows wouldn't let me change the font directory in the lib folder, so I created a jre_new and just copied everything over. Deleted everything I could in in the jre, downloaded the new jre from here
http://www.oracle.com/tec...wnloads-2133155.html created a jre_new folder to extract it into. And THEN copied everything over to the jre folder.
This also worked on the Mac, except the path was slightly different and I only copied two directories in from the full install.
I can't seem to attach a screenshot here so please see the other NG for how the OSX path is different.