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: 
You may have to reinstall the Adobe flash plugin even if you already have it installed. Then go to `chrome://plugins/` to make sure that it is enabled in Chrome.
I had an issue after updating ubuntu on an older pc. I didn't see a pepper file or anything that some other people had issues with. I went to the ubuntu software center, found flash under the installed tab, and uninstalled it. I think this left the old Flash 10 on the pc. It is now working as it did before the update and flash is no longer crashing.