[rules-users] Problem when creating KieModuleModel

Hi Guys! I am having a problem using drools 6 in my project. And I was able to reproduce it in one of the examples.. I just got this example: https://github.com/droolsjbpm/drools/tree/master/drools-examples-api/kiem... built the 2 dependant projects, kiebase inclusion and namedkiesession. Then, run the org.drools.example.api.kiemodulemodel.KieModuleModelExample in my eclipse, and I get the following: SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder". SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. Exception in thread "main" java.lang.NullPointerException at org.drools.compiler.kie.builder.impl.KieBuilderImpl.generateKieModuleMetaInfo(KieBuilderImpl.java:222) at org.drools.compiler.kie.builder.impl.KieBuilderImpl.buildAll(KieBuilderImpl.java:194) at org.drools.example.api.kiemodulemodel.KieModuleModelExample.go(KieModuleModelExample.java:39) at org.drools.example.api.kiemodulemodel.KieModuleModelExample.main(KieModuleModelExample.java:63) Exactly the same happens when I do the same in my project. Any ideas? Thanks! Demian