Ubuntu – Smart SVN opens instead of Nautilus when click on a file system folder in dash or wherever under Ubuntu 16.04

The problem is that when I click on a folder in dash or in cairo-dock I get Smart SVN up instead of Nautilus.

How to resolve this annoying thing?

I tried those suggestions but with no success.

• Clicking on a folder in docky opens banshee not nautilus
• Default file manager changed, can't change back

I deleted ~/.local/share/mime/mime.cache and also tried

gconftool –set "/desktop/gnome/applications/component_viewer/exec" –type string "nautilus %s"

But Smart SVN is still associated with the folders.