Rete tree build error with conditional consequences

Description of problem:
The rete tree can't be built for rules containing conditional consequence.

Version-Release number of selected component (if applicable):
BRMS 6.0.0.ER4
JBDS 7.0.1.GA
Drools plugin 6.0.0.201308222359 (and also master as of 2013-11-07)

Steps to Reproduce:
1. create a rule resource with constraints connected by || operator
2. switch rule editor to "Rete Tree"

Actual results:
Rete Tree Build Error!

Expected results:
Rete tree.

Error log from Eclipse:
java.lang.reflect.InvocationTargetException
at org.drools.eclipse.editors.DRLRuleEditor2$3.run(DRLRuleEditor2.java:248)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Caused by: org.drools.core.RuntimeDroolsException: java.lang.reflect.InvocationTargetException : [Rete(0)]
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:59)
at org.drools.eclipse.reteoo.ReteooVisitor.visitReteooRuleBase(ReteooVisitor.java:79)
at org.drools.eclipse.editors.rete.ReteViewer.loadReteModel(ReteViewer.java:172)
at org.drools.eclipse.editors.DRLRuleEditor2$3.run(DRLRuleEditor2.java:240)
... 1 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:50)
... 4 more
Caused by: org.drools.core.RuntimeDroolsException: java.lang.reflect.InvocationTargetException : [EntryPointNode(1) EntryPoint::DEFAULT ]
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:59)
at org.drools.eclipse.reteoo.ReteooVisitor.visitRete(ReteooVisitor.java:97)
... 9 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:50)
... 10 more
Caused by: org.drools.core.RuntimeDroolsException: java.lang.reflect.InvocationTargetException : [ObjectTypeNode(5)::EntryPoint::DEFAULT objectType=[ClassObjectType class=com.sample.Message] expiration=-1ms ]
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:59)
at org.drools.eclipse.reteoo.ReteooVisitor.visitNode(ReteooVisitor.java:154)
at org.drools.eclipse.reteoo.ReteooVisitor.visitBaseNode(ReteooVisitor.java:135)
... 14 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:50)
... 16 more
Caused by: org.drools.core.RuntimeDroolsException: java.lang.reflect.InvocationTargetException : [LeftInputAdapterNode(6)]
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:59)
at org.drools.eclipse.reteoo.ReteooVisitor.visitNode(ReteooVisitor.java:154)
at org.drools.eclipse.reteoo.ReteooVisitor.visitBaseNode(ReteooVisitor.java:135)
... 20 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:50)
... 22 more
Caused by: org.drools.core.RuntimeDroolsException: java.lang.reflect.InvocationTargetException : [ConditionalBranchNode: cond=if ( $msg.text != null ) break[[RuleTerminalNode(7): rule=testNamedConsequence]]]
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:59)
at org.drools.eclipse.reteoo.ReteooVisitor.visitNode(ReteooVisitor.java:154)
at org.drools.eclipse.reteoo.ReteooVisitor.visitBaseNode(ReteooVisitor.java:135)
... 26 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor64.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.drools.core.util.ReflectiveVisitor.visit(ReflectiveVisitor.java:50)
... 28 more
Caused by: java.lang.RuntimeException: problem visiting vertex org.drools.core.reteoo.ConditionalBranchNode
at org.drools.eclipse.reteoo.ReteooVisitor.visitBaseNode(ReteooVisitor.java:110)
... 32 more
Caused by: java.lang.ClassNotFoundException: org.drools.eclipse.reteoo.ConditionalBranchNodeVertex cannot be found by org.drools.eclipse_6.0.0.201308222359
at org.eclipse.osgi.internal.loader.BundleLoader.findClassInternal(BundleLoader.java:501)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:421)
at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:412)
at org.eclipse.osgi.internal.baseadaptor.DefaultClassLoader.loadClass(DefaultClassLoader.java:107)
at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:190)
at org.drools.eclipse.reteoo.ReteooVisitor.visitBaseNode(ReteooVisitor.java:107)
... 32 more