When I most recently upgraded the driver for my Radeon 5670 using their autodetect tool (http://support.amd.com/en-us/download/auto-detect-tool) I started crashing immediately after first render. The below is the most recent example of the crash log entry this creates:
2013-11-29 23:59 GMT - atioglxx!8921060 - 04051233-2676-4bf9-95af-e146d4624939
That entry was after a clean uninstall and reinstall (http://wiki.catznip.com/index.php?title=Clean_Install_Windows) of R8.1
The kicker: The most recent version of the SL Viewer from LL works fine. I downloaded it only to confirm this is a Catznip bug. The other 3D-intensive apps I have also work without issue.
For thoroughness' sake, I have attached my SysInfo details in case you need more details about my setup.
I don't expect miracles but Catznip is my favorite SL viewer and it's the only one I want to keep on my PC. Please help.