SPFx Tutorial 3: Can't deploy my app after upload

Question

I am unable to get anything to happen after I upload my app to the AppCatalog library. Some of the default values I am seeing after upload are:

Enabled: Yes

Valid App Package: No

Deployed: No

Tutorial 1 and 2 both worked well with no issues. I am grabbing the helloworld-webpart.spapp file in the sharepoint folder of my project.

Is there something I need to do after upload to get the Deploy dialog to appear?

Step 3 of Tutorial 3

Answer 1

Currently the SharePoint Framework is in preview and is only available in a developer tenant (you can sign up for a free one). You then need to create a developer site collection in that tenant per the "Getting Started" instructions.