Running the latest version of RW and Foundry. Have downloaded and installed Mason. The stacks are showing in the sidebar. But when I drag a stack (e.g. Footer_nn) I get an error saying the stack is not installed.
Everything is present in the Addons folder in Library.
I even tried a full reinstall of RW and Foundry and Mason.
Do you have Potion and Thunder Pack installed as well? These are requirements to use every feature of the free Mason templates you’ve download. The requirements are listed on the download page of Mason addon: