In following the instructions of the last step of Reports and Dashboards and many examples noted, when I access the App exchange to download the Salesforce Adoption Dashboard, it only gives me the options to load it in "Production" or the "Sandbox".  I have no problem completing the task once it loaded in Production; however, when selecting the Check Challenge, the system is obviously looking for the Dashboard in a different location. When trying the process in the Sandbox, the system errors on login.  The window that opens when clicking "Launch your own hands-on org" takes me to a screen that won't permit launching the App Exchange.  Any suggestions?