Hi, running tests scenarios in Guvnor 5.2.0.Cr1 seems to be causing memory leak eventually. since the StatefulKnowledgeSession or the related class seems to have similar kind of leak in 5.2.0.Cr1, could it be that the same issue is causing the leak within Guvnor as well ? we tried to upgrade to 5.2.1.final version of Guvnor, but when we tried to load the assets in the new Guvnor that were previously created in 5.2.0.CR1 and persisted to a database, we are getting the following errors. ERROR 29-09 08:25:45,234 (LoggingHelper.java:error:69) Service method 'public abstract org.drools.guvnor.client.rpc.RuleAsse t org.drools.guvnor.client.rpc.AssetService.loadRuleAsset(java.lang.String) throws com.google.gwt.user.client.rpc.Serializatio nException' threw an unexpected exception: com.thoughtworks.xstream.mapper.CannotResolveClassException: dtable : dtable com.thoughtworks.xstream.mapper.CannotResolveClassException: dtable : dtable at com.thoughtworks.xstream.mapper.DefaultMapper.realClass(DefaultMapper.java:68) at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38) at com.thoughtworks.xstream.mapper.DynamicProxyMapper.realClass(DynamicProxyMapper.java:71) at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38) at com.thoughtworks.xstream.mapper.PackageAliasingMapper.realClass(PackageAliasingMapper.java:88) at com.thoughtworks.xstream.mapper.MapperWrapper.realClass(MapperWrapper.java:38) Isee that some of the decision table classes have changed as per the following lines of code ? //Post 5.2 model xt.alias( "decision-table52", GuidedDecisionTable52.class ); -- View this message in context: http://drools.46999.n3.nabble.com/running-Test-scenarios-in-Guvnor-5-2-0-... Sent from the Drools: User forum mailing list archive at Nabble.com.