java.lang.NullPointerException + Xalan

[Tihl]

I have a web application using servlets and SQL SERVER as engine. I am currently trying to move the app. to a server with more capacity and once installed on the new machine it works smoothly except for the part of the reports. The application generates html from xml using xalan and exactly the same code works on one machine but it doesnt on the other. Does it have something to do with the versions of the machines? does anybody know how to fix this bug? I have tried changing the enconding and still doesnt work.
Can anyone help me? Here is the complete error message.
java.lang.NullPointerException
com.unbit.servlet.sip.ReportGenerator.transformXML(ReportGenerator.java:247)
com.unbit.servlet.sip.ReportGenerator.doGet(ReportGenerator.java:178)
javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

 

[Diancecht]

Check the Xalan versions on both machines.

Cheers,

Dian