Thanks for hanging in there with me.
Not sure another screenshot will convey the issue. Let me try to summarize what's going on again.
All my subfolders under Photo Archive are in date sequential order - YYYYMMDD - [Subject]. I am able to click on about half of the subfolders between '19980101 - Francis' and '20130101' without any issues. When I try to open any subfolder after 20130101 - that is where I am running into the issue of the photos not displaying in the grid area. It is like I am not clicking on the subfolder at all - nothing happens.
It seems to be occurring with subfolders recently moved from 'My Lightroom Photos' to 'Photo Archive'. All folders/photos exist on my hard drive under 'Photo Archive', but in LR if I click on those particular subfolders nothing happens.
The other odd thing is that if I click on 'All Photographs' and scroll the filmstrip at the bottom all the way to the right, I can see the photos there. They just don't want to display when clicking on the subfolders.
Like I said, it is a very odd issue.
Contemplating just upgrading to a new version of LR to see if that resolves the issue.
Well most of your other screen shots displayed the folder list with nothing selected and no part of the grid view shown and no indication of any folder being selected.
Is that what you are talking about? That you can't select a folder past a certain number down the list?
From looking at the full folder list you posted in your last screen shot you posted I count 46 folders in the list and it is only up to 2004 in the 7 month and 23 day.
It seems you have a separate folder for each day you take images on.
I think you might of run into some bug where you can only have X number of folder and you have exceeded the limit.
It might be a bug in the Database system used to store all the catalog information.
You could try creating one top level folder for each year then move all those years folders into the year folder. Something like what you see in my folder list in the SS I posted. Although I do basically the same thing, have a folder for each day images were taken on, they are all subfolder under a Top level folder for that year.
1998
1999
2000
2001
And so on.
Not sure if that will cure the problem but it's worth a shot.