Apparently I require this "ExtensionStore" plugin now to use some of my protectivity ones like Joint Push Pull but he download shows a file size of 0mb and you get the following when trying to to use the download link:

/pluginrepo/rbz/

/var/www/html/pluginrepo/rbz/SketchUcationTools.rbz
File does not exist. Make sure you specified correct file name.

Quick Tip, if you are going to make a function mandatory, make people able to get hold of it!