I was trying to add a Google Chrome extension for my Twitter and got this error
Chrome error Could not create download directory. I thought its the same error I encountered using Chrome extension the last time – Google Chrome Download Not A CRX Error . It could be an error due to incompatible extension with my Chrome version. This happens all the time when Chrome updates to a new version and an extension did not.
I searched Google and landed on this helpful link – http://productforums.google.com/forum/#!topic/chrome/_p4jqPSD2mI
Here are the steps I made to fix this.
Go to your Chrome Settings
Go to Advanced Settings at the bottom
Downloads -> Download Location. My download location had a default location that is not existing anymore (its an external hard drive I used before).
Change it to a valid location in your local hard drive and you are all set.