[rules-users] How do I prevent the package registry from being null in my package builder?

[retoy]

I just installed Drools and wanted to build a simple RuleFlow. 
But When I add any process containing constraints or rules to my
Knowledgebuilder, I'm always getting a NullPointerException, because the
"package registry" seems to be null. 

.....

java.lang.NullPointerException
	at org.drools.compiler.ProcessBuilder.buildProcess(ProcessBuilder.java:119)
	at
org.drools.compiler.ProcessBuilder.addProcessFromFile(ProcessBuilder.java:223)
	at
org.drools.compiler.PackageBuilder.addProcessFromXml(PackageBuilder.java:447)
	at
org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:503)
	at
org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:25)

.....

ProcessBuilder.java:118        PackageRegistry pkgRegistry =
this.packageBuilder.getPackageRegistry(process.getPackageName());
ProcessBuilder.java:119        org.drools.rule.Package p =
pkgRegistry.getPackage();

.....


The ruleflow is successfully validated though when i press that button in
eclipse... Can somebody give me a hint what's missing?

Thanks!

-- 
View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/How-do-I-prevent-the-package-registry-from-being-null-in-my-package-builder-tp972121p972121.html
Sent from the Drools - User mailing list archive at Nabble.com.