[rules-users] NullPointerException when calling Scan manually

Dear Drools users, I just merged all my code to Drools 6.0.1 and I am happy to see that it is more stable. Several issues I had with 5.6.x do not present themselves in 6.0.1. I am still stuck on one bug however that occurs randomly. I wrote a unit test in which I deploy new rules and then call scanNow. Often the unit test succeeds, but sometimes it throws this nullpointer exception. java.lang.NullPointerException at org.drools.core.rule.Package.getRulesGeneratedFromResource(Package.java:668) at org.drools.core.rule.Package.removeRulesGeneratedFromResource(Package.java:658) at org.drools.core.reteoo.ReteooRuleBase.removeObjectsGeneratedFromResource(ReteooRuleBase.java:1653) at org.drools.compiler.compiler.PackageBuilder.removeObjectsGeneratedFromResource(PackageBuilder.java:4150) at org.drools.compiler.kie.builder.impl.KieContainerImpl.updateToVersion(KieContainerImpl.java:149) at org.kie.scanner.KieRepositoryScannerImpl.updateKieModule(KieRepositoryScannerImpl.java:214) at org.kie.scanner.KieRepositoryScannerImpl.scanNow(KieRepositoryScannerImpl.java:204) at derooms.be.engine.RuleEngine.scanNow(RuleEngine.java:111) at derooms.be.engine.ruleDeployment.RulesPackageWriter.deployRules(RulesPackageWriter.java:104) at derooms.be.engine.ruleDeployment.RulesPackageWriter.addRules(RulesPackageWriter.java:84) at derooms.be.engine.dynamicRuleWatcher.RuleFileHandler.handleModifiedFile(RuleFileHandler.java:50) at derooms.be.engine.dynamicRuleWatcher.RulesWatcherRunnable.run(RulesWatcherRunnable.java:105) at java.lang.Thread.run(Thread.java:744) Does anyone have an idea what the problem might be? Kind Regards, Brecht ------------------------------------------------------------- Brecht De Rooms Phd Student @ WISE Department of Computer Science Vrije Universiteit Brussel Pleinlaan 2, B-1050 Brussels, Belgium office: 10 G 731f phone: +32 2 629 37 49 email: bderooms(a)vub.ac.be ------------------------------------------------------------- --- Dit e-mailbericht bevat geen virussen en malware omdat avast! Antivirus-bescherming actief is. http://www.avast.com