On my Domino server (9.0.1, FP2) I am getting the following error.
11/20/2014 01:00:39 PM HTTP JVM: !err.PersistenceServiceResourceProvider.Errorwritingtopersistedcontenttor!. For more detailed information, please consult error-log-0.xml located in D:/Program Files/IBM/Lotus/Domino/data/domino/workspace/logs
When I look in the log-0.xml file I see errors like the following. Anyone else ever see this before? I searched the web and only found something similar back around 8.5.2 days.
<CommonBaseEvent creationTime="2014-11-20T16:49:03.506-05:00" globalInstanceId="ELac14b30a000149b8a6bc5c00000ab2" msg="!err.PersistenceServiceResourceProvider.Errorwritingtopersistedcontenttor!" severity="50" version="1.0.1">
<extendedDataElements name="CommonBaseEventLogRecord:level" type="noValue">
<children name="CommonBaseEventLogRecord:name" type="string">
<values>SEVERE</values>
</children>
</extendedDataElements>
<extendedDataElements name="CommonBaseEventLogRecord:sourceClassName" type="string">
<values>com.ibm.commons.log.AbstractLogMgr</values>
</extendedDataElements>
<extendedDataElements name="CommonBaseEventLogRecord:sourceMethodName" type="string">
<values>log</values>
</extendedDataElements>
<extendedDataElements name="CommonBaseEventLogRecord:Exception" type="string">
<values>java.lang.NullPointerException
	at com.ibm.xsp.webapp.PersistenceServiceResourceProvider$PersistenceServiceResource.write(PersistenceServiceResourceProvider.java:105)
	at com.ibm.xsp.webapp.FacesResourceServlet.doGet(FacesResourceServlet.java:110)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
	at com.ibm.xsp.webapp.FacesModuleResourceServlet.service(FacesModuleResourceServlet.java:85)
	at com.ibm.designer.runtime.domino.adapter.ComponentModule.invokeServlet(ComponentModule.java:576)
	at com.ibm.domino.xsp.module.nsf.NSFComponentModule.invokeServlet(NSFComponentModule.java:1335)
	at com.ibm.designer.runtime.domino.adapter.ComponentModule$AdapterInvoker.invokeServlet(ComponentModule.java:853)
	at com.ibm.designer.runtime.domino.adapter.ComponentModule$ServletInvoker.doService(ComponentModule.java:796)
</values>
<values>	at com.ibm.designer.runtime.domino.adapter.ComponentModule.doService(ComponentModule.java:565)
	at com.ibm.domino.xsp.module.nsf.NSFComponentModule.doService(NSFComponentModule.java:1319)
	at com.ibm.domino.xsp.module.nsf.NSFService.doServiceInternal(NSFService.java:662)
	at com.ibm.domino.xsp.module.nsf.NSFService.doService(NSFService.java:482)
	at com.ibm.designer.runtime.domino.adapter.LCDEnvironment.doService(LCDEnvironment.java:357)
	at com.ibm.designer.runtime.domino.adapter.LCDEnvironment.service(LCDEnvironment.java:313)
	at com.ibm.domino.xsp.bridge.http.engine.XspCmdManager.service(XspCmdManager.java:272)
</values>
</extendedDataElements>
<sourceComponentId component="Expeditor 6.2" componentIdType="ProductName" instanceId="" location="st2cnmtl01" locationType="Hostname" subComponent="" threadId="2" componentType="http://www.w3.org/2001/XMLSchema-instance"/>
<situation categoryName="ReportSituation">
<situationType xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:type="ReportSituation" reasoningScope="INTERNAL" reportCategory="LOG"/>
</situation>
</CommonBaseEvent>