Try to create a new profile, to see if the older isn't bad.
If ok, just keep some files in the old profile (bookmarks, cookies, favicons, sfile, wfile, ...), and put it in the new folder. You will just have to edit prefs.js and add some lines taken in old prefs.js like the one referring to sfile, and perhaps wfile.
A+
Mozilla/5.0 (x11; U; Linux x86_64; fr-FR; rv:38.0) Gecko/20100101 Ubuntu/12.04 K-Meleon/76.0
Web:
http://jujuland.pagesperso-orange.fr/
Mail : alain [dot] aupeix [at] wanadoo [dot] fr
Ubuntu 12.04 - Gramps 3.4.9 - Harbour 3.2.0 - Hwgui 2.20-3 - K-Meleon 76.0 rc