Unzip problem? Make sure you enter the password, and for MAC users especially, I recommend using the free, opensource program 7Zip (there is a MAC version too), which is what I make the zips with. Feel free to contact me, or report dead/erroneous links, at: firstname.lastname@example.org If you have trouble with any volumes in particular email me and I'll sort out alternative methods.
Recommendations and advice is always appreciated, Cheers! Rich