You and me both! I just tried installing my shiny new 3.9 over the top of 3.1 on UAE. But UAE no longer autorcognises CD's. So i got Idefix which comes with a CD file system, but it needs installer to work. So I grab it off Aminet, drop in my C (A hazy bit of Amiga knowledge that's stayed with me) and it still does not work! now i'm at a standstill. I just hope it works on my 4000T or i'm screwed!
On another note I was pissed off with my 3.9 CD- came in a cracked CD single case, no box, no mannuals, most annoying.