[rules-users] package registry null / event wait node constraint

I'm getting a NullPointerException when trying to add a rule flow into my knowledgebase. It occurs on line 119 of org.drools.compiler.ProcessBuilder, because the pkgRegistry is null. 118: PackageRegistry pkgRegistry = this.packageBuilder.getPackageRegistry(process.getPackageName()); 119: org.drools.rule.Package p = pkgRegistry.getPackage(); The reason for it must somehow be related to the constraint of my event wait state, since I don't get the exception, when I remove that. The constraint is just: dummy == "foo", where dummy is a global. I don't see how any package name should be involved here... Did I miss something in the user guide? Thanks for any suggestions how to figure out what the problem is! Reto -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/package-registry-null... Sent from the Drools - User mailing list archive at Nabble.com.