When trying to execute a crystal check on one of my development systems I found a problem after trying to fix another problem.  All the crystals were going to error status and the message was coming up:

File: SQL Access ManagerSQL error. Stmt #: 2  Error Position: 0  Return: 404 – ORA-01017: invalid username/password; logon denied  (200,0)

It turns out that the PSACCESSPRFL table had an extra entry which was invalid for the environment.  Once I removed the invalid entry from the PSACCESSPRFL table the problem was resolved.