[rules-users] ClassCastException when changing drools version 5.3.5.Final to 6.0.0.Beta3

[Andreas]

Hi,

when I change the version of drools from 5.3.5.Final to 6.0.0.Beta3 (maven
pom) 
I'm getting following exception:

org.drools.RuntimeDroolsException: Unable to load dialect
'org.drools.compiler.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel:org.drools.compiler.rule.builder.dialect.mvel.MVELDialectConfiguration'
	at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:283)
	at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:268)
	at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:181)
	at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:159)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:210)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:143)
	at
org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilder(KnowledgeBuilderFactoryServiceImpl.java:34)
	at
org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:47)
	at
net.javabeansdotasia.casestudy.test.Tester.prepareKnowledgeBase(Tester.java:136)
	at net.javabeansdotasia.casestudy.test.Tester.setUp(Tester.java:71)
	at net.javabeansdotasia.casestudy.test.Tester.main(Tester.java:160)

Caused by: java.lang.ClassCastException:
org.drools.compiler.rule.builder.dialect.mvel.MVELDialectConfiguration
cannot be cast to org.drools.compiler.DialectConfiguration
	at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:278)
	... 10 more

would be nice if someone could help me,
if the source code is needed let me know

Andreas




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