Thanks to you both for your input and responses, however, we now appear to be getting into the “cure-is-worse-than-the-disease” territory here, as what you’re recommending, based on my experience with the initial installation I did from game disks, would be quite a lengthy process.
A couple of things come to mind here:
The game is basically playable as it is, and the 10,000 keys in the Quest Items tab of the Inventory, are an “annoyance”, but not a game-stopper.
The other thing here is that with all of the machinations that I have already gone thru, I am not at all confident that this most recently recommended action will solve the problem, meaning that all of that effort might very likely be for naught.
And, I did contact the Support website with Projekt Red, and after fully explaining everything that had already gone on, I got a rather brain-dead response from them saying, “Sounds like a problem with an installed mod. Uninstall the mod, and verify/repair the game via GOG Galaxy..." (when I thought I was quite clear that I had no mods installed…) Ah well, that was a bit disappointing….
Butl, I guess I should come 100% clean on what I’ve done with this game. It was installed over 3 months ago, and I have invested about 170+ hours in it. And so, I have on several occasions, used a Trainer from www.cheathappens.com to augment only a few character attributes and currency amounts, but I don’t keep the Trainer running all the time, of course. When not augmenting the character (which is a very short process) it’s shut down. So, I am not sure if this constitutes a “mod” or not, because, I believe all that was changed was the saved game files, and I do not believe anything was done to the "Scripts" in that folder.
In any event, if you believe this Trainer could have been the cause of the described problem, I may then post something on the cheathappens forum for this game to see if anyone else has experienced this same thing. And, since I have been doing this for at least a couple of months ago, then I would assume that all of my saved game files have this trainer-augmented change already built in to them. If this is indeed the cause of the issue, then the only solution would be to erase all of the saved game files, start over at the beginning, and never use the trainer again. I guess I will have to consider that possibility….
Ah well, thanks again to you both for your consideration,