"Next" button during install not working

Hi Any thoughts here? Just got a Sun T2000 and am trying to install Oracle 9.2.0.1 (which will be patched to 9.2.0.4 upon completion, as per the live machine) in an LDOM and when I run the installer, the "About" and "Deinstall Product" buttons work, but the "Next" button doesn't. It won't proceed to the next screen ! The out/err files are 0-