Doesn't work on Mac Not yet rated

This extension (version 0.4.3) works OK in my Windows Firefox, but it's worse than useless in Mac Firefox. Not only does it completely fail to show any cached items, but it actually disables Firefox's built-in "about:cache" page from appearing at all!

Of all the extensions I've installed on both platforms (I usually keep them synchronized), this is so far the only one that doesn't work on the Mac.

This review is for a previous version of the add-on (0.4.3).