decision table building => NPE

kBuilder.add( resource, resourceType.DTABLE ); results in a NPE:

Exception in thread "main" java.lang.NullPointerException
at org.drools.decisiontable.DecisionTableProviderImpl.compileStream(DecisionTableProviderImpl.java:26)
at org.drools.decisiontable.DecisionTableProviderImpl.loadFromInputStream(DecisionTableProviderImpl.java:19)
at org.drools.compiler.DecisionTableFactory.loadFromInputStream(DecisionTableFactory.java:18)
at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:497)
at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28)
at rss.drools.setup.Application.setup(Application.java:47)

Notice that a simple
DecisionTableConfiguration dtConf = KnowledgeBuilderFactory.newDecisionTableConfiguration();
kBuilder.add( resource, resourceType, dtConf );
is not sufficient, the DecisionTableConfiguration still needs a DecisionTableInputType

Expected. there is a reasonable default DecisionTableConfiguration with DecisionTableInputType.XLS being set.

The simple call worked fine in 5.1.