export option not avaiable after moving report from JasperServer 5.0 to 5.5

Hi,

I have a report runs well under JS CP 5.0. After I move the report to 5.5 server. there is a strange behavior from the report viewer.

when i have the parameter screen displayed (either have it always display or have at least one mandatory parameter), the export option will not display if there is any result comes back from the report. However, it will display the Export Options if there is not result return for the first request.

Other report deploy on the same server may not have the same issue.

Any idea to sovle this issue?

thanks