java.lang.NullPointerException
	at org.drools.core.reteoo.builder.WindowReferenceBuilder.build(WindowReferenceBuilder.java:40)
	at org.drools.core.reteoo.builder.PatternBuilder.attachPattern(PatternBuilder.java:116)
	at org.drools.core.reteoo.builder.PatternBuilder.build(PatternBuilder.java:77)
	at org.drools.core.reteoo.builder.GroupElementBuilder$AndBuilder.build(GroupElementBuilder.java:108)
	at org.drools.core.reteoo.builder.GroupElementBuilder.build(GroupElementBuilder.java:68)
	at org.drools.core.reteoo.builder.ReteooRuleBuilder.addSubRule(ReteooRuleBuilder.java:164)
	at org.drools.core.reteoo.builder.ReteooRuleBuilder.addRule(ReteooRuleBuilder.java:136)
	at org.drools.core.reteoo.ReteooBuilder.addRule(ReteooBuilder.java:110)
	at org.drools.core.impl.KnowledgeBaseImpl.addRule(KnowledgeBaseImpl.java:1684)
	at org.drools.core.impl.KnowledgeBaseImpl.addRule(KnowledgeBaseImpl.java:1674)
	at org.drools.core.impl.KnowledgeBaseImpl.internalAddPackages(KnowledgeBaseImpl.java:961)
	at org.drools.core.impl.KnowledgeBaseImpl.access$000(KnowledgeBaseImpl.java:126)
	at org.drools.core.impl.KnowledgeBaseImpl$1.run(KnowledgeBaseImpl.java:749)
	at org.drools.core.impl.KnowledgeBaseImpl.enqueueModification(KnowledgeBaseImpl.java:757)
	at org.drools.core.impl.KnowledgeBaseImpl.addPackages(KnowledgeBaseImpl.java:746)
	at org.drools.core.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:277)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:630)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:565)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:546)
	at org.drools.testcoverage.common.util.KieBaseUtil.getKieBaseFromReleaseIdByName(KieBaseUtil.java:72)
	at org.drools.testcoverage.common.util.KieBaseUtil.getDefaultKieBaseFromReleaseId(KieBaseUtil.java:55)
	at org.drools.testcoverage.common.util.KieBaseUtil.getKieBaseAndBuildInstallModule(KieBaseUtil.java:89)
	at org.drools.testcoverage.common.util.KieBaseUtil.getKieBaseAndBuildInstallModuleFromDrl(KieBaseUtil.java:82)
	at org.drools.testcoverage.functional.oopath.OOPathCepTest.testDeclaredLengthWindowWithOOPathInWindow(OOPathCepTest.java:223)