When I update or do a clean install of version 0.0.6 this crash happends, and the plugin remains inactive:

24-09-2012 11:07:08 jenkins.InitReactorRunner$1 onAttained
INFO: Prepared all plugins
24-09-2012 11:07:08 jenkins.InitReactorRunner$1 onTaskFailed
SEVERE: Failed Initializing plugin scm-sync-configuration
java.lang.NullPointerException
at hudson.PluginManager$2$1$2.run(PluginManager.java:333)
at org.jvnet.hudson.reactor.TaskGraphBuilder$TaskImpl.run(TaskGraphBuilder.java:146)
at org.jvnet.hudson.reactor.Reactor.runTask(Reactor.java:259)
at jenkins.model.Jenkins$7.runTask(Jenkins.java:875)
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)
24-09-2012 11:07:08 jenkins.InitReactorRunner$1 onAttained
INFO: Started all plugins

Workaround is to revert to the old version http://updates.jenkins-ci.org/download/plugins/scm-sync-configuration/