error in creating workspace

Hi all,
I'm at svn 19707

I receive an error when I try to create a workspace.
The workspace is created, but I receive this message
==========================================================
<http://localhost:8080/nuxeo/generic_error_page.faces?conversationId=0NXMAIN&conversationIsLongRunning=true#>>
 Default
domain
<http://localhost:8080/nuxeo/nxdoc/demo/267c8ec8-7e83-4e70-b9ac-90498bed2abf/view_documents/default/?conversationId=0NXMAIN&conversationIsLongRunningtrue>
> Aree di lavoro
<http://localhost:8080/nuxeo/nxdoc/demo/20209985-4e8c-45cc-943a-33619fe36b10/view_documents/default/?conversationId=0NXMAIN&conversationIsLongRunningtrue>



      An error occurred

exception invoking: getAvailableStateTransitionsMap

+ - Show stacktrace
<http://localhost:8080/nuxeo/generic_error_page.faces?conversationId=0NXMAIN&conversationIsLongRunning=true#>
==========================================================

Going to "workspaces" I see the new workspace as content, but clicking
on his name generates the same error.

I tried also to give away my jboss and reinstall a fresh copy, but this
didn't help.

Any idea?

Regards
    Mirto

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__________________________________________________________
Mirto Silvio Busico             ICT Consultant
Tel. +39 333 4562651