Question: When I try to watch Youtube videos in Google Chrome on Ubuntu Quantal Quetzal, I get the following "Couldn't load plugin." message.

![enter image description here](https://i.stack.imgur.com/gG72k.png)

I tried to go to "Wrench" -> Tools -> Task Manager in Google Chrome, close the Shockwave process, and reload the page with the Youtube video, but the problem persists.

Am I missing a plugin? What is erring?

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**Update**: 

Thanks everyone! You're awesome.

After a while I finally solved the problem. After going to `chrome://plugins`, I found that I had a mysterious plugin called `libpepflashplayer`. I disabled it, and now, I can play Youtube videos. Here's how my `chrome://plugins` settings look like now.

![enter image description here](https://i.stack.imgur.com/kulxx.png)

However, is this a good way to solve the problem? Is there a deeper problem I may be having? Like my Chrome browser not updating correctly?

Answer: 
I'm using a different version but maybe this helps you anyways.

I had this problem with the latest dev channel. `Version 26.0.1397.2 dev`

I fixed it by deleting the folder `PepperFlash` in `.config/google-chrome/` and `.config/google-chrome/Default/Pepper\ Data/`, for some reason there is a copy of of the .so file for the pepper flash plugin, which is not really needed because there original copy on `/opt/google/chrome/PepperFlash/` should be loaded as well which may be causing a conflict or something.

Make sure to backup your whole `.config/google-chrome/` folder just in case.

I don't use the standalone flash package anymore, just the pepper flash version included with Chrome, just in case you are wondering.
I had this exact problem yesterday, so upgraded by downloading and re-installing chrome (it is now Version 24.0.1312.57 and still doesn't work.

So I went back to using Chromium and Chromium works Version 23.0.1271.97 Ubuntu 10.04 (23.0.1271.97-0ubuntu0.10.04.1)

As you can see am on Ubuntu 10.04