For people having problems with Chrome, IQS and the new store problems (Not being able to install IQS since chromes web store appearance),
When Google launched the Chrome App Store, it was one a good step ahead to provide users with Extensions and apps from a centralized location. However, Chrome still allowed users to install extensions and user scripts from any website making it a little insecure.
However, it looks like Google is now beefing up on security and disallowing users from installing extensions, apps and user scripts from outside the Chrome Web Store. Users will now be prompted with a message saying “Extensions, apps and user scripts can only be added from the Chrome Web Store” when they try to install something which is not part of the Chrome Web Store.
Here is the fix,
1. Download the script but don't install
2. Click on the wrench on top right of Chrome
3. Go to "Tools" then "Extensions"
4. When the page open with all your extensions showing, Drag and drop the script file direct onto the page and it will install as usual