I experience the following exception:

Apr 8, 2008 2:51:48 PM hudson.triggers.SCMTrigger$Runner runPolling
SEVERE: Failed to record SCM polling
java.lang.NullPointerException
at hudson.model.AbstractProject.pollSCMChanges(AbstractProject.java:594)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:259)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:291)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:417)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:269)
at java.util.concurrent.FutureTask.run(FutureTask.java:123)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:650)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:675)
at java.lang.Thread.run(Thread.java:595)

It happens for projects where the checkbox "Tie this project to node" is not
activated. In this case the method getAssignedLabel() seems to return null.