Chked it buddy on my Win 7 64 home pc, the error you get is because your home pc does not have 2.66 version of the extension. That error was resolved in th 2.65 version. you can try uninstalling the extension entirely and then installing the new one, instead of update if there is a issue.
hope this helps.
And this sure did work. Thanks a million. My favorite forum is back again. That annoying modal nag is gone. For some reason I had the auto updates option -- for add ons disabled. All good now. Thanks...!