BUG: No lock found

[dlindner]

See ​https://www.openmicroscopy.org/qa2/qa/feedback/17015/

java.lang.Exception: org.openmicroscopy.shoola.env.data.DSAccessException: Cannot access data. 
Cannot find the enumeration's value.
	at org.openmicroscopy.shoola.env.data.OMEROGateway.handleException(OMEROGateway.java:855)
	at org.openmicroscopy.shoola.env.data.OMEROGateway.getEnumerations(OMEROGateway.java:6069)
	at org.openmicroscopy.shoola.env.data.OmeroMetadataServiceImpl.getEnumeration(OmeroMetadataServiceImpl.java:2101)
	at org.openmicroscopy.shoola.env.data.views.calls.EnumerationLoader$1.doCall(EnumerationLoader.java:85)
	at org.openmicroscopy.shoola.env.data.views.BatchCall.doStep(BatchCall.java:144)
	at org.openmicroscopy.shoola.util.concur.tasks.CompositeTask.doStep(CompositeTask.java:226)
	at org.openmicroscopy.shoola.env.data.views.CompositeBatchCall.doStep(CompositeBatchCall.java:126)
	at org.openmicroscopy.shoola.util.concur.tasks.ExecCommand.exec(ExecCommand.java:165)
	at org.openmicroscopy.shoola.util.concur.tasks.ExecCommand.run(ExecCommand.java:276)
	at org.openmicroscopy.shoola.util.concur.tasks.AsyncProcessor$Runner.run(AsyncProcessor.java:91)
	at java.lang.Thread.run(Thread.java:662)
Caused by: org.openmicroscopy.shoola.env.data.DSOutOfServiceException: Could not load omero.api.IPixels
	at org.openmicroscopy.shoola.env.data.Connector.get(Connector.java:915)
	at org.openmicroscopy.shoola.env.data.Connector.getPixelsService(Connector.java:443)
	at org.openmicroscopy.shoola.env.data.OMEROGateway.getEnumerations(OMEROGateway.java:6056)
	... 9 more
Caused by: Ice.UnknownException
    unknown = "ome.conditions.InternalException: No lock found: a1cab5cd-eab8-460b-ba88-f429096ab0ffomero.api.IPixels
               	at omero.util.ServantHolder.releaseLock(ServantHolder.java:147)
               	at ome.services.blitz.impl.ServiceFactoryI.getByName(ServiceFactoryI.java:463)
               	at omero.api._ServiceFactoryTie.getByName(_ServiceFactoryTie.java:143)
               	at omero.api._ServiceFactoryDisp.___getByName(_ServiceFactoryDisp.java:986)
               	at omero.api._ServiceFactoryDisp.__dispatch(_ServiceFactoryDisp.java:1271)
               	at IceInternal.Incoming.invoke(Incoming.java:222)
               	at Ice.ConnectionI.invokeAll(ConnectionI.java:2482)
               	at Ice.ConnectionI.dispatch(ConnectionI.java:1258)
               	at Ice.ConnectionI.message(ConnectionI.java:1213)
               	at IceInternal.ThreadPool.run(ThreadPool.java:321)
               	at IceInternal.ThreadPool.access$300(ThreadPool.java:12)
               	at IceInternal.ThreadPool$EventHandlerThread.run(ThreadPool.java:693)
               	at java.lang.Thread.run(Unknown Source)
               "
	at IceInternal.Outgoing.invoke(Outgoing.java:158)
	at omero.api._ServiceFactoryDelM.getByName(_ServiceFactoryDelM.java:610)
	at omero.api.ServiceFactoryPrxHelper.getByName(ServiceFactoryPrxHelper.java:2218)
	at omero.api.ServiceFactoryPrxHelper.getByName(ServiceFactoryPrxHelper.java:2181)
	at org.openmicroscopy.shoola.env.data.Connector.get(Connector.java:908)
	... 11 more


	at org.openmicroscopy.shoola.env.ui.UserNotifierImpl.showErrorDialog(UserNotifierImpl.java:191)
	at org.openmicroscopy.shoola.env.ui.UserNotifierImpl.notifyError(UserNotifierImpl.java:291)
	at org.openmicroscopy.shoola.env.ui.UserNotifierImpl.notifyError(UserNotifierImpl.java:259)
	at org.openmicroscopy.shoola.agents.metadata.EditorLoader.handleException(EditorLoader.java:159)
	at org.openmicroscopy.shoola.env.data.events.DSCallAdapter.eventFired(DSCallAdapter.java:84)
	at org.openmicroscopy.shoola.env.data.views.BatchCallMonitor$1.run(BatchCallMonitor.java:124)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:642)
	at java.awt.EventQueue.access$000(EventQueue.java:85)
	at java.awt.EventQueue$1.run(EventQueue.java:603)
	at java.awt.EventQueue$1.run(EventQueue.java:601)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:87)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:612)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)