Aha. Box.com. We’ve seen this before.
First. You don’t wrap your VF Page name in <> That is why you are getting the error message.
But Second. Because the VF page is really just generating an iFrame and passing parameters to it, you can bypass the VF page entirely and just put the iFrame with parameters into the template component in your Skuid page.
Here is another forum post where this is described: https://community.skuid.com/t/adding-a-box-custom-component-or-template-to-my-page
Cheers.
