Quote - Two things wrong with this:

A lot of people I know, and in this forum, had no problems getting Bryce 6 to install.  Technically, it's not an upgrade, it's a separate program.  You can even leave your Bryce 5 or 5.5 installed if you want.  I didn't have any problems at all and am playing with the HDR and IBL options right now.

Secondly, the program asks for a serial number because it requires one.  If you check your DAZ account under Available Serial Numbers you should find the one for Bryce 6.  You should also have gotten an email with the serial number in it.

If you had problems, you would do better contacting DAZ directly rather than posting that the app doesn't work for anyone. 

Apparently the Upgrade Version has got it's own installer that checks for a current installation of 5.0 or 5.5 and they botched the build of that one. Additionally the system is not issuing serial numbers correctly, so the upgraders are facing a wee problem right now.