[inaneDirk]

Thanks amcfarla, this solved the issues I was having (I'd already gone through the API registration but was missing the latest version of the addon)

I posted this on a reddit post (https://www.reddit.com/r/kodi/comments/4...in/d12g557) which I think would be helpful for the Kodi users here, who want to use their own API keys (which I would suggest), to get this back working without having to go through all the posts on this forum (and if I made a mistake anywhere please let me know):

It actually is a really easy fix to get it back working. I would first suggest following the instructions here to generate your own Youtube API Key, which with these instructions is simple to follow (the instructions after the bold text 'End of edit 02/06/16' is no longer needed with the newer version you download in the next step) and also don't reinstall the youtube plugin like the author is stating after removing, that will be done in the 3rd step on my reddit post:

(1) http://forum.kodi.tv/showthread.php?tid=...pid2213129

(2) Then grab the latest youtube release from this person, which is located here, just grab the latest version .zip file:
https://github.com/Kolifanes/plugin.vide...e/releases

(3) You will need to manually install the zip via the addons option in Kodi, so find a place to store the zip file you can find it easily on Kodi.

(4) You will have to launch the new installed Youtube addon once and configure the initial settings for the file to be present you want to edit.

(5) After launching, I would suggest copying and pasting the api keys you generated from the first step into settings.xml file the addon creates, which the location of the settings.xml file is at the following link:
http://forum.kodi.tv/showthread.php?tid=...pid2276478

(6) The lines you want to edit in that settings.xml file are the three below, just replace the keys listed with your new keys you acquired in the first step. You can use any text editor but make sure you save it back as an xml file, not txt, if you use notepad:
<setting id="youtube.api.id" value="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" />
<setting id="youtube.api.key" value="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" />
<setting id="youtube.api.secret" value="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" />

Using your own keys you will never have to worry about them being overused by any other users. So, unless Google changes settings in youtube, this should continue to work. If you have any questions just reply to this post.