I had this issue. I found there were two applications called "Files" in
/usr/share/applications/ plus one called "Home Folder". The command for these was
nautilus %u so I was pretty sure they had something to do with the problem. Anyway, removing these on their own didn't work, so this is what I did:
- Open terminal and type
alacarte (this opens the menu for editing). Remove "Files" from the "Accessories" menu (it may be there twice, remove both). Close menu.
sudo nautilus in terminal, navigate to
/usr/share/applications/ and remove both "Files" and "Home Folder" applications.
- Log off and on again.
- Edit the menu as in step 1 and re-create the "Files" item with the command
nautilus in a terminal, pick any folder and right click on it, select "open with other application", then "browse", then choose the "Files" item you just created.
After step 3 you will not be able to open any folders unless you run the command
nautilus in a terminal, steps 4 and 5 fix this.
This worked for me but I have no idea if it is the best/quickest/safest or stupidest way.