Many thanks to the epg team for solving the ongoing problems with updating the .xml file. All devices working now.
Also my thanks to MiB for his patience while I tried his suggestions.
All working fine for me.
Just made sure that I was running 1.0.17.
Then reset local path in Stalker to /temp on android ( older version pushed file to /pvr.stalker) and /cache on PC.
Cleared guide, restarted Kodi and re-enabled TV and was good to go.
Had to reinstall updater on PC since it wouldnt update to 1.0.17, otherwise no problem.
Guide working on PC, Firestick and 2 Android tablets.
As I understand things, epgupdater should automatically update to latest version. It did for me on android devices, but not on pc where I had to reinstall it.