Had a quick crack at this with no luck.
Can manually enter single channels and watch them, but JRiver does not seem to be able to import EPG and match it to a list of channels (either it does not understand it and cannot match it, or will not download it to begin with).
http://i.mjh.nz/nzau/kodi.m3u8http://i.mjh.nz/nzau/epg.xmlThe channels are imported from M3U8 without IDs, and IDs cannot be entered manually (either when editing one channel at a time or importing a M3U8, it's an empty read only field either way).
Guide comes up blank, asks to me to match manually, but clicking on the coloured links to fix it only produces an empty box that cannot be typed into, so I have no idea what it is even asking me to do.
I'll leave the links here for someone else to try to see if that narrows down the problem (perhaps those files are not the right format). If I know they work (or not) for someone else, it would help a great deal.
I'm also a bit concerned that v28 installer does not seem to create any firewall rules, but creating generic ones on all the executables in the JRiver river folder did not help. With 27, a set of firewall rules were created, but it would be a lot of trouble to reimage the computer from an older backup to retrieve them and adapt them at this point and I can't find any information on what they should be.