Tried to post this earlier, but it didn't take. Noticed after failing at step 6 that KB976932 showed up in the installed updates under programs and features. Pretty sure it wasn't there before. When I tried another machine I looked at installed updates before starting and noted that it had 91 updates listed and KB976932 wasn't one of them. I got the same not valid error on the second machine, but now it lists 16 updates with KB976932 at the top of the list.