[MikeKL]

Once Pi is fully booted up it appears to be stable for long periods and I can use both PVR via live TV option in GUI including EPG information etc.
(been using/testing like this for a while with nightly milhouse builds) .

I don't believe two PVRs is a supported configuration. Can you disable one and confirm if hang still occurs?

Just updated to #0705 and with only one PVR enabled, had following single kodi crash during 1st boot-up

Kodi Crashlog and then kodi.log after clean boot into kodi after crash.

Tvheadend 4.2 (LibreELEC Tvh-addon v8.0.103-#0703-milhouse-v4.1-2140-gf34fac1)

Have enabled debug log and currently re-booted with no issues kodi debug log (so far)

Still having occasional kodi crashes after a full-reboot to complete an installation of latest nightly build.
i.e. After installation of #0709 over #0708

Kodi Crashlog 1
Kodi Crashlog 2

And kodi.log after sucessfully boot into kodi and normal use for couple of hrs

Any tidying up (db's, addons) to my installation that perhaps I need to perform to ensure I have no left over elements since I had TWO pvr's running etc? (Currently just disabled PVR filmon Client, which disables PVR Filmon's front/backends in one operation?)

Regarding my enabled PVR :-

• Backend - LibreELEC Tvh-addon v8.0.103-#0703-milhouse-v4.1-2140-gf34fac1
  
• Frontened - Tvheadened HTSP Clien 999.3.4.5