Reports are not generating

[Azrael Noor]

No Idea where to start this post, so i started in first topic of this community.

i want to use servlet with jasperreports.

but for that i have to create a report.
when i build a query and when i click next in jasper report wizard i get this error

com.sybase.tds.RowFormatToken.getColumnClassName(I)Ljava/lang/String;


Kindly solve this error