So as per the jsp, you are using unmanaged crystal reports and using Crystal reports for ecllipse jar files. Let me know if my understanding differs from yours?
Are you using the latest jars in your application?
You could find the latest jars from the below location
http://scn.sap.com/docs/DOC-29757
Download the runtime libraries and take a backup of your application, upgrade the jars and test the behaviour.
Thanks,
Prithvi