During restart of Jenkins service following error occurs in Jenkins Matrix job (job don't display on available job list).

Jan 31, 2013 1:40:40 PM jenkins.InitReactorRunner$1 onTaskFailed
SEVERE: Failed Loading job Master_DBTests-DBU
java.lang.NullPointerException
at hudson.model.Job.getBuilds(Job.java:569)
at org.jvnet.hudson.plugins.DownStreamProjectActionFactory.createFor(DownStreamProjectActionFactory.java:58)
at hudson.model.AbstractProject.createTransientActions(AbstractProject.java:698)
at hudson.model.Project.createTransientActions(Project.java:206)
at hudson.model.AbstractProject.updateTransientActions(AbstractProject.java:688)
at hudson.matrix.MatrixConfiguration.updateTransientActions(MatrixConfiguration.java:92)
at hudson.model.AbstractProject.save(AbstractProject.java:266)
at hudson.model.Job.onLoad(Job.java:192)
at hudson.model.AbstractProject.onLoad(AbstractProject.java:278)
at hudson.model.Project.onLoad(Project.java:83)
at hudson.matrix.MatrixConfiguration.onLoad(MatrixConfiguration.java:85)
at hudson.matrix.MatrixProject.loadConfigurations(MatrixProject.java:541)
at hudson.matrix.MatrixProject.loadConfigurations(MatrixProject.java:548)
at hudson.matrix.MatrixProject.loadConfigurations(MatrixProject.java:548)
at hudson.matrix.MatrixProject.loadConfigurations(MatrixProject.java:548)
at hudson.matrix.MatrixProject.rebuildConfigurations(MatrixProject.java:585)
at hudson.matrix.MatrixProject.onLoad(MatrixProject.java:476)
at hudson.model.Items.load(Items.java:221)
at jenkins.model.Jenkins$17.run(Jenkins.java:2539)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at jenkins.model.Jenkins$7.runTask(Jenkins.java:889)
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$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

Ive attached config file
Jenkins version 1.500