I'm using Jenkins-Core 1.500 version.
I upgraded the EnvInject Plugin to 1.81 this afternoon, but I found it has a seriously problem:
1. All the jobs with subversion polling not work.
2. Subversion polling log can't be tracked. see blow logs.

of cause, after I downgrade the 1.81 to 1.80, the polling function go back to OK.

Subversion Polling Log

Started on Jan 31, 2013 8:15:45 PM
ERROR: Failed to record SCM polling for hudson.model.FreeStyleProject@455d0ff7[ec_build_trigger]
java.lang.NullPointerException
at java.util.TreeMap.putAll(TreeMap.java:290)
at org.jenkinsci.plugins.envinject.EnvInjectVarList.<init>(EnvInjectVarList.java:25)
at org.jenkinsci.plugins.envinject.EnvInjectPluginAction.getTarget(EnvInjectPluginAction.java:20)
at org.jenkinsci.plugins.envinject.EnvInjectPluginAction.buildEnvVars(EnvInjectPluginAction.java:24)
at hudson.model.AbstractBuild.getEnvironment(AbstractBuild.java:948)
at hudson.scm.SubversionSCM.compareRemoteRevisionWith(SubversionSCM.java:1230)
at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
at hudson.scm.SCM.poll(SCM.java:373)
at hudson.model.AbstractProject._poll(AbstractProject.java:1493)
at hudson.model.AbstractProject.poll(AbstractProject.java:1410)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:439)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:468)
at hudson.util.SequentialExecutionQueue$QueueEntry.run(SequentialExecutionQueue.java:118)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)