Don’t forget the WACs!

When building out a test environment to start playing with a prerelease version of SQL Server 2012 you’ll quickly figure out that Microsoft has included a great to new tool to make powerpivot v2 configuration much easier.
The first step thing it does on opening is check your farm to ensure that SP1 is installed.  We built a clean test environment, applied SP1, June CU, and Sept for SPF and Server.  Still getting that wonderful error.
Just figured it out when looking at patch status.  The office web apps.. originally called the web app companions have their own service pack which is not included in with SharePoint.  You can find it right here.
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=26639