CutRocket help with files

I’m sure this is user error, but I need some help. I’ve downloaded some projects, unzipped them into folders. But, when I open them, Carbide Create opens, but it’s blank. But, others work. So, Like I said, I’m sure it’s me but what am I missing?

The files in question were made with older versions of Carbide Create, see:

and

if you have difficulty with a specific project, let us know and we will update it and link it there.

How do I open the file as a V6? I have V8 Pro

As noted in the links above, get v7 from:

https://carbide3d.com/downloads

and use it for v7 files as shown step-by-step in those links.

If that still doesn’t work, post the link to a project which will not open in v7 and we will work out how to handle it.