Backdrop not installed?

I just purchased Foundry and I have also just downloaded and installed the Mason templates.
I have watched almost all of the videos and have used Foundry extensively in my site now so I am comfortable. However, when I try to use the Mason templates, none of the CTA templates work (the footers do). I get a message indicating “Backdrop not installed” and none of the content appears when exit editing and view the page,
How can I resolve this?

Hi @StewartLynch, do you have the Potion Pack installed? It was noted that the Mason templates require a few of the stacks from the add-on packs.

Hi @StewartLynch— Backdrop is a part of the Potion Pack as @curlypaws points out. It is noted on the product page for the free Mason Templates that more than just Foundry is required.