Node Types Registration Fails Migrating to Jackrabbit 2.1.1

[Juan Diego Botiva Leon]

Hi!

I'm migrating our Jackrabbit 1.6.1 repository to Jackrabbit 2.1.1, but when the 
repository is started, my custom node types registration fails with the 
following exception:

javax.jcr.nodetype.InvalidNodeTypeDefinitionException: 
[{http://www.mynt.org/jcr/mynt/1.0}attachment] primaryItemName is already 
specified by a supertype and must therefore not be overridden.
   at 
org.apache.jackrabbit.core.nodetype.NodeTypeManagerImpl.registerNodeTypes(NodeTypeManagerImpl.java:597)
   at 
org.apache.jackrabbit.commons.cnd.CndImporter.registerNodeTypes(CndImporter.java:127)
   at 
org.apache.jackrabbit.commons.cnd.CndImporter.registerNodeTypes(CndImporter.java:74)

My CND file is as follows:

<mynt = 'http://www.mynt.org/jcr/mynt/1.0'>
<mix = 'http://www.jcp.org/jcr/mix/1.0' >
<nt = 'http://www.jcp.org/jcr/nt/1.0'>

[mynt:attachment] > nt:file, mix:referenceable
- mynt:id (Long) mandatory primary
- mynt:name (String) mandatory

[mynt:systemObject] > nt:hierarchyNode, mix:referenceable
- mynt:id (Long) mandatory primary
- mynt:name (String) mandatory
- mynt:class (String) mandatory
+ * (mynt:attachment) = mynt:attachment

[mynt:attachments] > nt:hierarchyNode
+ * (mynt:systemObject) = mynt:systemObject

[mynt:document] > nt:file, mix:referenceable, mix:versionable
- mynt:id (Long) mandatory primary
- mynt:name (String) mandatory

[mynt:folder] > nt:folder, mix:referenceable
- mynt:id (Long) mandatory primary
- mynt:name (String) mandatory
+ * (mynt:folder) = mynt:folder
+ * (mynt:document) = mynt:document

[mynt:documents] > nt:hierarchyNode
+ * (mynt:folder) = mynt:folder
+ * (mynt:document) = mynt:document

[mynt:workspace] > nt:hierarchyNode, mix:referenceable
- mynt:id (Long) mandatory primary
- mynt:name (String) mandatory
+ * (mynt:documents) = mynt:documents mandatory
+ * (mynt:attachments) = mynt:attachments mandatory

[mynt:repository] > nt:hierarchyNode, mix:referenceable
- mynt:id (Long) mandatory
- mynt:name (String) mandatory
+ * (mynt:workspace) = mynt:workspace


What do I have to change in my CND file and how this affects the migration to 
Jackrabbit 2.1.1 ?

Thanks in advance

Regards


Juan Diego Botiva