Collection widget doesn't exists

Hi all,

I would like to use this new widget, but it seems there's some problem. I tried to follow the tutorial but when I view mashup it return blank and the console show the message error "collectionwidget doesn't exist".

I also tried to install with success the css collection bundle following this instruction:

https://community.ptc.com/t5/Talkin-ThingWorx/New-in-8-2-Collection-and-CSS-Editor/gpm-p/535064

but the result is the same.

Someone can help me?