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java.util.ConcurrentModificationException at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793) at java.util.HashMap$KeyIterator.next(HashMap.java:828) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:51) at com.darkcorner.minotaur.sa.redline.RedlineDatabaseControl.ensureRunning(RedlineDatabaseControl.java:101) at com.darkcorner.minotaur.sa.redline.RedlineService.restartService(RedlineService.java:316) at com.darkcorner.harmonice.ServiceHandler.callRestart(ServiceHandler.java:241) at com.darkcorner.harmonice.ServiceHandler.access$000(ServiceHandler.java:56) at com.darkcorner.harmonice.ServiceHandler$RestartTask.run(ServiceHandler.java:63) 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.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:207) 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)