I recently installed Trusty.
The problem is, when I switch to Moka, Ubuntu still shows me folder icons which are used in Faience, unity-webapps-applications, default, gnome, hicolor and locolor
Untitled.png

The themes of my folder icon do not get updated with the rest of the system

When I manually update the icon cache, I get this error:
Code:
gtk-update-icon-cache-3.0: The generated cache was invalid.
Any ideas on how to resolve this?