If it's any consolation, Ive only managed to unzip two files from anyone, ever; out of hundreds(?). I'm not exactly a computer rookie either having one since before MS went public, let alone the net.
This includes windows, androids, i-pad, and browsers that claim to open them but seldom do (though lately pdf has been ok, same thing. Too many proprietary tweaks early on wrecked it. Now that it's old news, some regularity exists again)
'IMO, it's either a crappy format or has crappy instructions (which despite the modern method of "poke till something happens", is how I do things....or don't if the instructions suck. I think it's Plato..."to teach well, the teacher must assume the student knows nothing". Program help has failed miserably at that. Only OUR drives to use a computer has made it successful in many cases imo.
I'll lump pdf in there as a distant second on apathetic code. When I encounter them, I usually just move on. Now I'm very glad I didn't buy that command unit last month; I forgot about the programing aspect.
Good luck.
