Problem installing CS6 Extended on new laptop

Good morning. 

I'm hoping someone can help me figure out how to install CS6 on a new computer. I recall that I first purchased CS5 (with a CD), then upgraded to CS6 in July, 2014, from a download, then downloaded and installed CS6 Extended in February, 2015. I don't recall whether CS6 Extended was an upgrade ($399 ???).
 

I deactivated both CS5 and CS6 on the older laptop, went to my Adobe account>Orders, downloaded and installed CS6 Extended, and pasted in the serial number. I got a message to the effect: “This is a valid serial number, but it doesn't reference a qualified product. Please select a product.” From the drop-down menu, CS6 Extended was not an option.
 

I'm thinking I might need to first install CS5 from the CD, then upgrade to CS6 Extended. However, when I try to run the CD on the new laptop (a Dell 7710, running Windows 7 Pro) I get a message that the installer failed to initialize. If I attempt to run the CD on the older laptop (a Dell XPS 16, also running Windows 7 Pro), the installer does initialize. So, apparently, the problem is machine-specific. Does anyone have any idea as to how I might get the CD to run on the new machine?