I'd always suggest backing up your presets folder before reinstalling - just in case. Just save the presets folder into another directory, and you should be set. As for kern32.dll... that might be the Windows kernel... I'm not sure why it would be giving you errors, but try only running Bryce (close Photoshop and other memory-intensive programs). Try updating your drivers for your video card and run any critical updates from Windows Update (I'm assuming some version of Windows here). Good luck.