Files in the wrong place?

[Ofnuts]

If you add Otto's PPA to your software sources, you get Gimp's (and popular plugins) latest releases automatically (otherwise you are restricted to the one in the Ubuntu repos, that are typically frozen to about 6 months before the Ubuntu version is made public. There is also a gimp-edge PPA if you want to use 2.9 instead (but you can't have both that way).

• For Gimp 2.8.x: https://launchpad.net/~otto-kesselgulasc...buntu/gimp
  
• For Gimp 2.9.x: https://launchpad.net/~otto-kesselgulasc.../gimp-edge