I just switched to Fedora 22 and decided to go for Gnome3 this time instead of XFCE. I like the Thunar file manager so I downloaded it. I've had trouble setting it as the default file manager though.
What I tried:
I ran exo-preferred-applications. Under Utilities -> File Manager I selected Thunar.
The problem:
It's not acting as the default file manager. When I open my Downloads folder from my browser I still get Nautilus. Same when I click on my "Places".