Strange NullPointerException using IIS, tomcat 5.0.6 servlets

[vikas jain]

Hey,

I configured IIS to run with tomcat (with the help of this forum only) :)

I have forms and they are processed by servlets. using tomcat they work very 
fine. but when i try to run using IIS, it gives nullpointerexception. I am 
using GET method to send the form information.

Is it a bug with tomcat.
if someone has come through the same problem, please send your suggetions. 
thansk for all the ideas,

Here is the log file of tomcat:
java.lang.NullPointerException
	at 
com.ti.SCMTools.Forms.FormECN.ECNFormParameters.getFormString(ECNFormParameters.java:75)
	at com.ti.SCMTools.Forms.FormECN.FormECN.doGet(FormECN.java:102)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
	at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:286)
	at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:253)
	at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
	at 
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:256)
	at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:210)
	at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
	at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:190)
	at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
	at 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:174)
	at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:149)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
	at 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:156)
	at 
org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:151)
	at 
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:564)
	at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:974)
	at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:207)
	at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:294)
	at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:375)
	at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:664)
	at 
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:606)
	at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:777)
	at 
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:649)
	at java.lang.Thread.run(Thread.java:536)

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