Well I have yet to get a successful build from SL 1.21 or 1.22. I just haven't had the time to dive into the new build environment. Luckily, Linden Lab released a bunch of updates for SL 1.20.17. Therefore, you can download updated packages using the links Solaris 10 and OpenSolaris/Nevada.
I'll try to work on the newer versions of the viewer as soon as I get the next release of Solaris CAT out the door.