Might as well post my present issue, just in case anyone has a simple solution.

OS: Ubuntu 16.04.2 LTS 64-bit.
Application: Kodi v18.0 (also tried v17)
Issue: After running my latest batch of system updates and removing unused packages, Kodi freezes and stops responding or terminates suddenly every time I attempt to access or install any add-ons. Default YouTube addon pops up a failure to connect message when the application first opens. All attempts to install any add-ons cause the application to terminate.

Crashlog:
Troubleshooting: Removed all packages, uninstalled, reinstalled v17 via terminal. Issue persists.

did you try turning it off and on?

I'm sorry, are you from the past?

i tried :(

Dam, beat me to it -.-

I don't think he posts any more but you could send a PM to Freebase Dali. He is a systems genius and if anyone knows how to fix this I'll bet my Marillion collection he does.

Thanks, TH! I tried shooting him a PM but his mailbox is full. Also posted it to a Kodi Add-on subreddit with no luck, and checked the official Kodi forum but they explicitly do not offer support for third party add-ons.

Perhaps I'll have better luck with the unofficial Kodi add-on support forum at tvaddons.org.

Did you revert your system updates to isolate what might be causing the problem? I've had issues in the past with driver/system updates creating unintentional problems and the only fix was to wait for a second patch.

I'm gonna repost this to a tech forum I use and see if I can find something more conclusive because I really don't know much about Ubuntu and I feel stupid asking you such a dumb question.

Not stupid at all! I'll have to look at my package manager and see if there's a roll back option. And thanks for sharing my question!

It worked with your girlfriend.