I've been working through the install video and have got an error at the point of creating the new team project that creates a new SharePoint site and source control folder (at about 19 minutes into the video). The error I'm getting is "TFS 30177 Team Project Creation Failed" and the dialog's text is copied below:

 

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Error

TF30170: The plugin Microsoft.ProjectCreationWizard.Portal failed during task SharePointPortal from group Portal.

Explanation

Plugin error text: "Please contact your administrator. There was an error contacting the server. Technical information (for administrator): HTTP code 200: OK"

User Action

Contact your Team Foundation Server administrator.

Warning

TF30144: The New Team Project Wizard attempted to roll back all of the steps taken to this point but was unsuccessful. Contact your Team Foundation Server administrator for further instructions.

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Can someone reference what I should do to correct this and move forward?