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Jan 15, 2008 at 08:13 AM

Problem following Web Dynpro tutorial in NetWeaver CE 7.1

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Hi all,

I have followed a training at the SAP Training Centre in Belgium, and back from this training I installed the NetWeaver CE 7.1 on my computer.

I have followed the "Developing your first Web Dynpro application" tutorial step-by-step, I have compiled it and deployed it on the server, but I'm having trouble when trying to run this "Welcome" project: I get an error:

500 Internal Server Error

SAP NetWeaver Application Server/Java AS

Failed to process request. Please contact your system administrator.

Error Summary

While processing the current request, an exception occured which could not be handled by the application or the framework.

If the information contained on this page doesn't help you to find and correct the cause of the problem, please contact your system administrator. To facilitate analysis of the problem, keep a copy of this error page. Hint: Most browsers allow to select all content, copy it and then paste it into an empty document (e.g. email or simple text file).

Root Cause

The initial exception that caused the request to fail, was:

java.lang.UnsupportedClassVersionError: Bad version number in .class file

at java.lang.ClassLoader.defineClass1(Native Method)

at java.lang.ClassLoader.defineClass(ClassLoader.java:654)

at com.sap.engine.boot.loader.ResourceMultiParentClassLoader.loadClassLocal(ResourceMultiParentClassLoader.java:198)

at com.sap.engine.boot.loader.MultiParentClassLoader.findClassInLoaderGraph(MultiParentClassLoader.java:306)

at com.sap.engine.boot.loader.MultiParentClassLoader.loadClass(MultiParentClassLoader.java:256)

... 60 more

See full exception chain for details.

Any idea of what causes this problem?

Thanks in advance!