Hi,
I have a lenya1.2.4  publication deployed in tomcat. It was working superbly 
sometime ago. At that time I had copied the back up content i.e. 
*       lenya/pubs/mypub/content
*       lenya/pubs/mypub/resources
*       lenya/pubs/mypub/ac

Now I deploy another new war file with the publication my pub in it. Then I 
replace these old folders in the new application.

But when i go and hit "site" tab and then choose versions, ac auth, ac live 
tabs i get the following error message:
org.apache.cocoon.ProcessingException: Failed to execute pipeline.: 
java.lang.NullPointerException 

org.apache.cocoon.ProcessingException: Failed to execute pipeline.: 
java.lang.NullPointerException
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:582)
        at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:183)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:783)
        at 
org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:413)
        at 
org.apache.cocoon.components.source.SourceUtil.parse(SourceUtil.java:270)
        at 
org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:115)
        at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:235)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:783)
        at 
org.apache.cocoon.components.source.impl.SitemapSource.toSAX(SitemapSource.java:413)
        at 
org.apache.cocoon.components.source.SourceUtil.parse(SourceUtil.java:270)
        at 
org.apache.cocoon.generation.FileGenerator.generate(FileGenerator.java:115)
        at 
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:269)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:483)


.....

Caused by: java.lang.NullPointerException
        at 
org.apache.cocoon.generation.ServerPagesGenerator.generate(ServerPagesGenerator.java:214)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:575)
        ... 75 more
java.lang.NullPointerException
        at 
org.apache.cocoon.generation.ServerPagesGenerator.generate(ServerPagesGenerator.java:214)
        at 
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.processXMLPipeline(AbstractProcessingPipeline.java:575)
.....................


What might be the problem behind this and what would be the solution to resolve 
this problem??

regards,
Anshuman





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