KODI crashes on exit and can’t download subtitles

So I’ve currently got 2 issues with my KODI system:

KODI version: 16.1
Architecture: x86_64 (Intel-based)
OS: Ubuntu 16.04.1 LTS
Kernel version: 4.4.0-34-generic

I am running a few add-on’s and the Aeon Nox skin.

Firstly, the KODI application crashes on exit.
I think this line, near the end of the debug log, could be related: “player.showcodec’ still used by 2 instances”

Secondly, all of a sudden KODI is unable to search subtitles on Opensubtitles and subscene. It starts searching for subtitles but then just hangs in this search, seemingly without end (have waited at least 30 secs for the search to find something or finish).

Any help and expertise would be greatly appreciated, as I would really like to avoid reinstalling KODI completely, or something else drastic like that.