installPlugin remote API causes Confluence to crash

2009-10-07 20:28:00,025 ERROR [DefaultQuartzScheduler_Worker-0] [org.quartz.core.ErrorLogger] schedulerError Job (DEFAULT.ClusterSafetyJob threw an exception.
org.quartz.SchedulerException: Job threw an unhandled exception. [See nested exception: java.lang.RuntimeException: More than one cluster safety number in database.]
	at org.quartz.core.JobRunShell.run(JobRunShell.java:214)
	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)
* Nested Exception (Underlying Cause) ---------------
java.lang.RuntimeException: More than one cluster safety number in database.
	at com.atlassian.confluence.cluster.safety.HibernateClusterSafetyDao.getClusterSafetyNumberObject(HibernateClusterSafetyDao.java:40)
	at com.atlassian.confluence.cluster.safety.HibernateClusterSafetyDao.setSafetyNumber(HibernateClusterSafetyDao.java:24)
	at com.atlassian.confluence.cluster.safety.DefaultClusterSafetyManager.verify(DefaultClusterSafetyManager.java:34)
	at sun.reflect.GeneratedMethodAccessor382.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at com.atlassian.spring.interceptors.SpringProfilingInterceptor.invoke(SpringProfilingInterceptor.java:20)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
	at $Proxy68.verify(Unknown Source)
	at com.atlassian.confluence.cluster.safety.ClusterSafetyJob.executeJob(ClusterSafetyJob.java:13)
	at com.atlassian.confluence.setup.quartz.AbstractClusterAwareQuartzJobBean.surroundJobExecutionWithLogging(AbstractClusterAwareQuartzJobBean.java:63)
	at com.atlassian.confluence.setup.quartz.AbstractClusterAwareQuartzJobBean.executeInternal(AbstractClusterAwareQuartzJobBean.java:46)
	at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:86)
	at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)

java.lang.RuntimeException: There was a problem evicting or flushing a PluginData object
        at org.apache.axis.message.SOAPFaultBuilder.createFault(SOAPFaultBuilder.java:222)
        at org.apache.axis.message.SOAPFaultBuilder.endElement(SOAPFaultBuilder.java:129)
        at org.apache.axis.encoding.DeserializationContext.endElement(DeserializationContext.java:1087)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:633)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanEndElement(XMLNSDocumentScannerImpl.java:719)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(XMLDocumentFragmentScannerImpl.java:1685)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:368)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:834)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:148)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1242)
        at javax.xml.parsers.SAXParser.parse(SAXParser.java:375)
        at org.apache.axis.encoding.DeserializationContext.parse(DeserializationContext.java:227)
        at org.apache.axis.SOAPPart.getAsSOAPEnvelope(SOAPPart.java:696)
        at org.apache.axis.Message.getSOAPEnvelope(Message.java:435)
        at org.apache.axis.handlers.soap.MustUnderstandChecker.invoke(MustUnderstandChecker.java:62)
        at org.apache.axis.client.AxisClient.invoke(AxisClient.java:206)
        at org.apache.axis.client.Call.invokeEngine(Call.java:2784)
        at org.apache.axis.client.Call.invoke(Call.java:2767)
        at org.apache.axis.client.Call.invoke(Call.java:2443)
        at org.apache.axis.client.Call.invoke(Call.java:2366)
        at org.apache.axis.client.Call.invoke(Call.java:1812)
        at com.dolby.confluence.net.confluence.ConfluenceserviceV1SoapBindingStub.installPlugin(ConfluenceserviceV1SoapBindingStub.java:4654)
        at org.swift.confluence.cli.ConfluenceClient.installPlugin(ConfluenceClient.java:2187)
        at org.swift.confluence.cli.ConfluenceClient.handleRequest(ConfluenceClient.java:441)
        at org.swift.common.cli.AbstractRemoteClient.process(AbstractRemoteClient.java:90)
        at org.swift.common.cli.CliClient.doWork(CliClient.java:160)
        at org.swift.confluence.cli.ConfluenceClient.main(ConfluenceClient.java:99)