Starting Firefox from Synaptic link generates 'Profile Missing' error - known bug?

[John Hupp]

In Synaptic under 14.04, if for a selected package you click _Visit 
Homepage_ from the description pane, this generates the error:

    _Profile Missing_
    Your Firefox profile cannot be loaded.  It may be missing or
    inaccessible.

FF starts just fine standalone.

I have not explored widely to see if other app links suffer from a 
similar problem.  Recently I clicked on some link somewhere in Gimp and 
got this:

    _help-browser Message_
    Perhaps you are missing GIO backends and need to install GVFS.

I have not been able to duplicate the Gimp problem this morning (can't 
remember what I clicked on).

But are these manifestations of a known bug?
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