j4 | What's Opera, Doc?

So the other day I decided to actually buy a copy of the Opera web browser, because I was annoyed by the banner ads in the free version but even more annoyed by IE crashing my iMac every ten minutes.

Having got the registration code for the new version, I went to download my copy. Quick download, quick install. However, when I came to actually launch the application, it told me "This application requires MacOS 8.6 or higher and CarbonLib 1.5 or higher." Well, I'm running MacOS 9.1, so I went to find out what the hell CarbonLib is when it's at home, and discovered that it's some kind of software development kit for the Mac, and it's freely downloadable. So I download that (which takes about 20 minutes because it's huge) and install it, and reboot the machine, and have another go at running Opera ... only to get exactly the same error message.

Opera's website (which is utterly broken in IE on the Mac) doesn't, as far as I can tell, give any more detailed information about requirements for running Opera 6 than to say what version of MacOS is needed.

Opera's website also, however, doesn't seem to want to give up anything resembling a tech support email address, except to registered users. Who in order to access this service need to enter their username and password, which they get when they register, which they can only do by launching the bloody application.

Anybody have any suggestions? Am I missing something obvious?