This is ridiculous. In addition I have discovered another flaw in the Photos app which may go some way to not only showing how bizarre this implementation is, but also how deeply it is ingrained.
In order to get my photos to display in the Photos app (even writing that is making me more stupid), I thought I would change the location of the Pictures folder. I only store my photos on SkyDrive, however I have my photos set to "available offline".
I opened Explorer, and opened up the Properties of the Pictures folder under Folders. In the location tab I changed the location to C:\Users\myusername\SkyDrive\Pictures
Now when I click on the Pictures folder it shows my SkyDrive folder. I opened up the Photos app, but my photos still did not show up.
Realising this didn't work, I attempted to restore the Pictures folder to its default location, C:\Users\myusername\Pictures.
However I got an error message saying "Can't move the folder because there is a folder in the same location that can't be redirected."
I had a look, and yes, there is an empty folder in C:\Users\myusername\Pictures. I assumed the Photos app must be looking in there. I decided to try changing he location of that folder, but you can't! The Location properties tab doesn't exist for this folder!
So, finally I decided to delete that folder. Then I tried to change the location of the Pictures folder on This PC (the one I changed to point to SkyDrive) to C:\Users\myusername\Pictures. This time it said that the folder does not exist, and asked me if
I wanted to create it. Now whether I answer yes or no, I get presented with the same message: "Can't move the folder because there is a folder in the same location that can't be redirected.
So the OS thinks that folder still exists even though I've deleted it. It seems to be highly ingrained.
What's worse is that I've emptied my recycle bin, and can no longer restore the original C:\Users\myusername\Pictures folder. Which means the Photos app will never show my photos.
This is completely and utterly absurd. I refer to my initial question. How am I supposed to get my photos to display in the Photos app? Why am I even asking this question!?