Same bug running Ubuntu 16.04 and inkscape 0.91 r13725.
In my case this is due to a file that was in an autofs filesystem that cannot be mounted.
The two workarounds described above solve the problem (~/.local/share/recently-used.xbel and setting maxrecentdocuments=0 in ~/.config/inkscape/preferences.xml).
Same bug running Ubuntu 16.04 and inkscape 0.91 r13725.
In my case this is due to a file that was in an autofs filesystem that cannot be mounted.
The two workarounds described above solve the problem (~/.local/ share/recently- used.xbel and setting maxrecentdocume nts=0 in ~/.config/ inkscape/ preferences. xml).