Yeah, that'll do. That's two things that worked for you that have not worked for me.
- Changing the location of my pictures folder in This PC did not result in the pictures in this new location showing up in the Photos app. However I did point it to SkyDrive (where my offline pictures are stored).
- Adding the SkyDrive pictures location to the Pictures library did not bring those pictures into the app either.
There's clearly something different (better) about your 8.1 system. Different build?

