octave/matlab path not automatically updated

In User > TVB Settings, I update the field "Optional Matlab or Octave path:". I click in "Validate path" and it's all ok.

I stop and then start again TVB, go again to User > TVB Settings and the path is still there.

However, the Analysis don't all appear to me because the file .tvb.configuration was not updated. After updating that file all the Analysis appear.