Looks like the PC1 Fx profile is corrupt cos I cannot manually (including by drag/drop or copy-paste) or use "add bookmark here" addon to save many urls (mostly google urls) but also google urls also fail to show up in Fx history, so go figure.
What I thought I'd do, was to backup PC2's full profile with FEBE (PC2 did not have those PC1 problems) and install that FEBE profile on PC2, in the hope that PC1 will function good like PC2 does.
What procedure or anything else would you suggest? I have the HTG "how to" on how to backup with FEBE and your article "FEBE 101-The Basics of backing Up, and also your FEBE 101)-Restoring a Firefox Profile. Just a tad bit of lack of a full understanding after studying these good articles on my part is all.
Your help is and will be appreciated. Thanks, Jim.

BTW, Love your Paste Email Plus addon. Works many places and is a time saver, for sure!