I tried to run the new version of hudson from a separate jboss instance. It seem to have affected existing hudson. Suddenly the jobs don't appear in GUI. While re-starting Hudson, I notice below error in jbossstart.log
</Snip> 08:25:39,873 ERROR [STDERR] Mar 16, 2012 8:25:39 AM hudson.model.Hudson $5 onTaskFailed SEVERE: Failed Loading job STAR-FRAMEWORK hudson.util.IOException2: Unable to read /home/star/.hudson/jobs/STAR- FRAMEWORK/config.xml at hudson.XmlFile.read(XmlFile.java:130) at hudson.model.Items.load(Items.java:108) at hudson.model.Hudson$13.run(Hudson.java:2268) at org.jvnet.hudson.reactor.TaskGraphBuilder $TaskImpl.run(TaskGraphBuilder.java:146) at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259) at hudson.model.Hudson$4.runTask(Hudson.java:734) at org.jvnet.hudson.reactor.Reactor$2.run(Reactor.java:187) at org.jvnet.hudson.reactor.Reactor$Node.run(Reactor.java:94) at java.util.concurrent.ThreadPoolExecutor $Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor $Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619) Caused by: com.thoughtworks.xstream.converters.ConversionException: Invalid reference ---- Debugging information ---- reference : ../project-properties/entry[9]/scm-property/originalValue class : hudson.maven.MavenModuleSet required-type : hudson.maven.MavenModuleSet path : /maven2-moduleset/scm line number : 98 ------------------------------- </Snip> Likewise this is the same error that appears for all jobs. Please help me to fix this. let me know, if you need more information