uvijayreddy657 [http://community.jboss.org/people/uvijayreddy657] created the discussion "jBPM 5.2 : NullpointerException Issue in loading knowledgeAgent.applyChangeSet(ResourceFactory.newUrlResource(url));" To view the discussion, visit: http://community.jboss.org/message/642192#642192 -------------------------------------------------------------- Getting NullpointerException issue in JBPM 5.2 when loading kbase using KnowledgeAgent. But same is working with JBPM 5.1 without any issue. url= http://localhost:8080/ (http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/SDS/... (http://localhost:8080/drools-guvnor/org.drools.guvnor.Guvnor/package/SDS/...) knowledgeAgent .applyChangeSet(ResourceFactory.+newUrlResource+(url));  The following exception I am getting with JBPM 5.2 jars. But the same is working with jBPM 5.1 jars.   *Stacktrace:* ** ** ** java.lang.NullPointerException at org.drools.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:148) at org.drools.agent.impl.KnowledgeAgentImpl.addResourcesToKnowledgeBase(KnowledgeAgentImpl.java:1016) at org.drools.agent.impl.KnowledgeAgentImpl.incrementalBuildResources(KnowledgeAgentImpl.java:933) at org.drools.agent.impl.KnowledgeAgentImpl.buildKnowledgeBase(KnowledgeAgentImpl.java:659) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:190) at org.drools.agent.impl.KnowledgeAgentImpl.applyChangeSet(KnowledgeAgentImpl.java:169) -------------------------------------------------------------- Reply to this message by going to Community [http://community.jboss.org/message/642192#642192] Start a new discussion in jBPM at Community [http://community.jboss.org/choose-container!input.jspa?contentType=1&...]