Uninstall and reinstall is not really that painful, unless you got lots of presets and objects added to the magic pallette. You said you encountered errors while installing. Could have scrambled something during installation. If you did decide to uninstall, try reinstalling in a different folder. Could also clean up the registry after uninstalling and before reinstalling. Lots of those registry cleaning softwares around. Google is your best friend, but perhaps other members here have good suggestions?