Unable to call Crystal report with XML Webservice datasource from eclipse

Hi,

I designed a report in Crystal report with XML datasource for a webservice call. In crystal report it is working fine but failing in Java(Using eclipse and tomcat) with below error

Error loading database connector. The class 'com.crystaldecisions.reports.queryengine.driverImpl.DriverLoader' could not be accessed.

All other reports with jdbc/jndi working fine from java. Could you please advise if I am missing some java files and where to down load?

Thanks in advance

Thomas