Hi Chris,
It looks like something broke the file permissions on that prism reflector file. The Indigo installer tries to fix those problems, so the problem might have occurred after you installed Indigo 6.0.1. I've seen poorly written installers do this -- they will overwrite the file/folder permissions and/or owners incorrectly on tons of files in the /Library/ folder.
Anyhow, follow the steps
outlined on this wiki article. Be sure and copy/paste the results (step #6) into a forum reply so we can see what was wrong.