Same setup works on Lion but not on Mountain Lion

Log is telling me:

Started on Aug 9, 2012 5:40:28 PM
Looking for changes...
Using node: Jenkins
ERROR: Failed to record SCM polling for hudson.model.FreeStyleProject@28161b52[test]
ha:AAAAWB+LCAAAAAAAAABb85aBtbiIQSmjNKU4P08vOT+vOD8nVc8DzHWtSE4tKMnMz/PLL0ldFVf2c+b/lb5MDAwVRQxSaBqcITRIIQMEMIIUFgAAckCEiWAAAAA=java.lang.NullPointerException
at hudson.plugins.perforce.PerforceSCM.substituteParameters(PerforceSCM.java:2253)
at hudson.plugins.perforce.PerforceSCM.getEffectiveProjectPath(PerforceSCM.java:595)
at hudson.plugins.perforce.PerforceSCM.compareRemoteRevisionWith(PerforceSCM.java:1149)
at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
at hudson.scm.SCM.poll(SCM.java:373)
at hudson.model.AbstractProject._poll(AbstractProject.java:1415)
at hudson.model.AbstractProject.poll(AbstractProject.java:1335)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
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:680)

Jenkins output:

SEVERE: Failed to record SCM polling for hudson.model.FreeStyleProject@28161b52[test]
java.lang.NullPointerException
at hudson.plugins.perforce.PerforceSCM.substituteParameters(PerforceSCM.java:2253)
at hudson.plugins.perforce.PerforceSCM.getEffectiveProjectPath(PerforceSCM.java:595)
at hudson.plugins.perforce.PerforceSCM.compareRemoteRevisionWith(PerforceSCM.java:1149)
at hudson.scm.SCM._compareRemoteRevisionWith(SCM.java:356)
at hudson.scm.SCM.poll(SCM.java:373)
at hudson.model.AbstractProject._poll(AbstractProject.java:1415)
at hudson.model.AbstractProject.poll(AbstractProject.java:1335)
at hudson.triggers.SCMTrigger$Runner.runPolling(SCMTrigger.java:420)
at hudson.triggers.SCMTrigger$Runner.run(SCMTrigger.java:449)
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:680)