Problem with Source List Updating v3.4 to v3.8

[mezzmer]

Please read the PPA section in our Help Manual. It is vital that you do this before adding any PPA to your system. I would stay away from PPA's until you are technically proficient on Linux, otherwise you are messing with a system you have no knowledge on. Best of luck

Thanks... read thoroughly, and it didn't answer my question.  Finally decided to wipe and reload, so I'm marking this thread as ABANDONED.  I've picked up the important question in another thread https://www.freecinema2022.gq/forums/insta.../#msg39182