In addition to having the same problem as OP, I tried registering the code from the book online to see if I could download it from the Store. It claims it was successfully registered, but it won't let me download it from the store. In Firefox, the space where it would be is a blank space with 1/24/13 and the normal download link underneath but now nothing from the store will download. I've tried Chrome and IE as well, to no avail. I cannot download MV or any other previously purchased Store items anymore. I've tried completely clearing the cache of all three browsers, and nothing. I've tried manually moving the SimPack file from the disc to the appropriate location to try and install it from the Launcher, but it constantly says that I don't have the proper version installed. I'm "Up to date" according to the Launcher, running v16.0.136.020017.
Any help?