Creating Categories Broken

In a new multisite installation I’m building, I’ve installed the new Directory Plugin. I went through Step 1 “Getting Started” – “First up, you need to configure your settings. This is where you can set the payment type, price and other settings.”

When I started on Step 2 – “Next, create new categories.” I got the following error:

“Invalid taxonomy”

That’s all the page says. The url for this error page is:

mydomain.com/wp-admin/edit-tags.php?taxonomy=listing_category&post_type=directory_listing

Thoughts?