Crystal Report Hangs in AIX

[Sri Ram]

I am using Crystal Reports to generate a report that has to be displayed to the user using java/j2ee

When i use

clientDoc.open(reportName,0);



the report gets generated and is displayed when the project is deployed in the windows environment.But when the same project is deployed in AIX environment the code hangs at the line that was mentioned above.All the crystal reports jars have been placed in the WEB-INF/lib path of the project. Can you please help me to resolve the problem.Are there different sets of Crystal reports jar for Windows and AIX that has to be used?
Thanks in Advance

Thanks and Regards,
Sriram