This extension is no longer working ! Visit the extension page for more information
IMPORTANT ! READ THIS :
I am very sorry for the inconvenience, but youtube just added some kind of security preventing the extension to inject the new css and script into their website, this is why is not working anymore.
I do not have the available time to find how to go around it and to keep updating this extension anymore.
But don't worry there is another extension doing the same as this one, but better, just follow this url: https://chrome.google.com/webstore/detail/subscriptions-grid-for-yo/dcnjhgnfnmijfkmcddcmffeamphmmeed
I am deeply sorry for the disturbance, and hope you will enjoy the other extension.