Since we upgrade to 7.9.2, we have an error when we use system.alarm.queryJournal in the vision client.
I think this issue was not in previous release 
(IA support [#49100]: system.alarm.queryJournal error with source filter)
It seems to occur with the source filter or the displaypath filter.
Something go wrong with the queryJournal executed in gateway.
Vision client script :
results = system.alarm.queryJournal(includeData=True, journalName=filtreJournalName, startDate=filtreStartDate, endDate=filtreEndDate, state=filtreState, priority=filtrePriority,source=filtreSource, includeSystem=True,provider=filtreProvider)Vision client log :
filtreJournalName=alarme_long
filtreStartDate=Mon May 08 00:00:00 CEST 2017
filtreEndDate=Tue May 09 23:59:59 CEST 2017
filtreState=['ClearUnacked', 'ClearAcked', 'ActiveUnacked', 'ActiveAcked']
filtrePriority=['Low', 'Medium', 'High', 'Critical']
filtreSource=['*TMA/*']
filtreProvider= ['L2_NORD']
13:36:21.961 [Thread-184] WARN com.inductiveautomation.factorypmi.application.script.builtin.WindowUtilities - Erreur interrogation historiques !
13:36:21.961 [Thread-184] ERROR RL2_LOG.RL2_ClientIHM - Fct: 'longProcessQueryJournal' Contexte: Type='<type 'com.inductiveautomation.ignition.client.gateway_interface.GatewayException'>' Err='com.inductiveautomation.ignition.client.gateway_interface.GatewayException: java.util.UnknownFormatConversionException: Conversion = ','' Stack=Traceback (most recent call last): File "<event:actionPerformed>", line 87, in longProcessQueryJournal GatewayException: com.inductiveautomation.ignition.client.gateway_interface.GatewayException: java.util.UnknownFormatConversionException: Conversion = ',' Gateway log :
Logger Time Message
Query 09May2017 13:30:04 (id=ECF92BDC) Error executing query.
java.util.UnknownFormatConversionException: Conversion = ','
at java.util.Formatter.checkText(Unknown Source)
at java.util.Formatter.parse(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at java.util.Formatter.format(Unknown Source)
at com.inductiveautomation.ignition.common.util.LoggerEx.createMessage(LoggerEx.java:200)
at com.inductiveautomation.ignition.common.util.LoggerEx.tracef(LoggerEx.java:236)
at com.inductiveautomation.ignition.common.util.LoggerEx.trace(LoggerEx.java:476)
at com.inductiveautomation.ignition.gateway.alarming.journal.JournalQuery.execute(JournalQuery.java:146)
at com.inductiveautomation.ignition.gateway.alarming.journal.AlarmJournal.query(AlarmJournal.java:212)
at com.inductiveautomation.ignition.gateway.alarming.journal.AlarmJournalManager.query(AlarmJournalManager.java:184)
at com.inductiveautomation.ignition.gateway.alarming.AlarmManagerImpl.queryJournal(AlarmManagerImpl.java:366)
at com.inductiveautomation.ignition.gateway.servlets.gateway.functions.Alarming.queryJournal(Alarming.java:62)
at sun.reflect.GeneratedMethodAccessor174.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.inductiveautomation.ignition.gateway.servlets.gateway.AbstractGatewayFunction.invoke(AbstractGatewayFunction.java:209)
at com.inductiveautomation.ignition.gateway.servlets.Gateway.doPost(Gateway.java:391)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at com.inductiveautomation.ignition.gateway.bootstrap.MapServlet.service(MapServlet.java:85)
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:837)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:583)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:548)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1160)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:511)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1092)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle(Server.java:518)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:308)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:244)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:273)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:95)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceAndRun(ExecuteProduceConsume.java:246)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:156)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:654)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:572)
at java.lang.Thread.run(Unknown Source)
Query 09May2017 13:30:04 (id=ECF92BDC) Starting query for datasource 'histo_long' with filter: (_state_:[[Cleared, Unacknowledged, Cleared, Acknowledged, Active, Unacknowledged, Active, Acknowledged]] , _provider_:[[L2_NORD]] , _prio_:[[Low, Medium, High, Critical]] , _eventtime_:between Mon May 08 00:00:00 CEST 2017 and Tue May 09 23:59:59 CEST 2017, inclusive , _path_:matches_any [*TMA/*] ,)