EROOR::jxl.read.biff.BiffException: Unable to recognize OLE stream

Hi,

i created a web dynpro java project to extract the data from excel file to table.In that got the fallowing eroor.

EROOR::jxl.read.biff.BiffException: Unable to recognize OLE stream

In this already i added the jxl.jar file to exteranal libraries of myproject and copy the same one into my lib folder also but i got the above Problem.

Please help me

Regards

Viswa