Two types of errors have been reported:

• link generation problems
• trying to create a page hierarchy more than 4 levels deep falls over

Stack:

net.sf.hibernate.AssertionFailure: Hibernate has a bug processing collections
at net.sf.hibernate.impl.SessionImpl$CollectionEntry.postFlush(SessionImpl.java:367)
at net.sf.hibernate.impl.SessionImpl.postFlush(SessionImpl.java:2830)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2237)