Async-Service failed.

2014-03-22 10:54:35,015 (default-invoker-Thread-19) [
ServiceSemaphore.java:105:WARN ] Service [purgeOldJobs] with wait semaphore
exceeded wait timeout, waited [302.469], wait started at 2014-03-22
10:49:32.546
2014-03-22 10:54:35,015 (default-invoker-Thread-19) [
TransactionUtil.java:415:WARN ] No transaction in place, so not suspending.
2014-03-22 10:54:35,015 (default-invoker-Thread-19) [
GenericServiceJob.java:118:ERROR]
---- runtime exception report

Async-Service failed.
Exception: java.lang.NullPointerException
Message: null
---- stack trace

java.lang.NullPointerException
org.ofbiz.service.semaphore.ServiceSemaphore.dbWrite(ServiceSemaphore.java:155)
org.ofbiz.service.semaphore.ServiceSemaphore.release(ServiceSemaphore.java:75)
org.ofbiz.service.ServiceDispatcher.runSync(ServiceDispatcher.java:561)
org.ofbiz.service.ServiceDispatcher.runSync(ServiceDispatcher.java:225)
org.ofbiz.service.GenericDispatcher.runSync(GenericDispatcher.java:163)
org.ofbiz.service.job.GenericServiceJob.exec(GenericServiceJob.java:71)
org.ofbiz.service.job.JobInvoker.run(JobInvoker.java:242)
java.lang.Thread.run(Thread.java:619)