Thanks for the information.
Autodesk Inventor Fusion Change Manager currently only works with the Subscription Advantage Pack. You can read more about the Subscription Advantage packs at http://usa.autodesk.com/adsk/servlet/index?id=14022754&siteID=123112
So,before you install Change Manager,you need to install the Subscription Advantage Pack on top of 2010 SP1.
Autodesk Inventor 2010 Subscription Advantage Pack (build 540) - you must be a Subscription Release customer to download this after logging in at http://usa.autodesk.com/adsk/servlet/index?id=14022754&siteID=123112
Please let us know if you have any other questions.