Troubles with example MusicianCollaborationResult from Tamin

Hello!

I have a trouble with example from Tamino 4.1.4 Documentation: MusicianCollaborationResult.class

Database URI is correct.

When i’m starting this example
(C:>java MusicianCollaborationResult ParkerCharlie) i have next message:

Exception in thread “main” java.util.ConcurrentModificationException
at org.jdom.ContentList$FilterListIterator.checkConcurrentModification(ContentList.java:1230)
at org.jdom.ContentList$FilterListIterator.hasNext(ContentList.java:942)
at MusicianCollaborationResult.show(MusicianCollaborationResult.java:115)
at MusicianCollaborationResult.main(MusicianCollaborationResult.java:194)


What it means?