Cannot determine java-type from given member [null]

Description

I've tested to migrate from hibernate 3.3.2 to 3.5.0 Beta4.
I've remove all hibernate*.jar from classpath and add only de hibernate3.jar
I've downloaded the source off hibernate-entitymanager to debug from eclipse. I've reached the class that has the error, but I don't know what can I do to resolve it.

I'm doing something wrong?

I attatch the sources of the classes that takes part on eclipse debug.

I don't know how to attach a testcase. The project has more than 200 entities.

I've post previously in hibernate forums:

https://forum.hibernate.org/viewtopic.php?f=1&t=1002363&p=2424419#p2424419

Environment

jdk 6u18
glassfishv3

Status

Assignee

Steve Ebersole

Reporter

Marcial AtiƩnzar Navarro

Fix versions

Labels

None

backPortable

None

Suitable for new contributors

None

Requires Release Note

None

Pull Request

None

backportDecision

None

Components

Affects versions

3.5.0-Beta-4

Priority

Major