Went to jseidel's link, did what the people THERE did (uninstalled 3 instances, reinstalled from a location someone mentioned) and by golly, the error message is gone!

Still getting the error message from Norton Save & Restore when I try to back up My Documents,though - was hoping this would also take care of THAT, since it mentions a database. (-Error EC8F1C50: Cannot create file backup for job: My Documents Backup.
--Error E4BC0012: An interaction with the catalog's database layer failed unexpectedly: sqlite3_step--5: database is locked.)

Will go to Symantec's site and see if I can figure that out. But thanks!