HTTP ERROR 500 in Archiva

[kesler wang]

Hi Archiva Team,
    There is 500 ERROR when I use Archiva 1.3.5, please have a look.
    I did following operations:
    1. Start archiva service with command:  archiva console  (win7 64bit OS)
    2. Visit localhost:8080/archiva and login successful.
    3. Upload artifact : Group Id : test
                               Artifact Id : test
                               Version： 1
                               Packaging： com
                               Classifier： empty
                              Artifact File： is any jar file
                             Repository Id ： Internal
        click  submit， there is a message notice me Artifact 'test:test:1'
was successfully deployed to repository 'internal'
    4. I can find file "test-1.com" file under archiva folder.
    5. Try to delete artifact  with same property value, there is an
exception, please get it from attachment.


   And there is other question: May I define a role by myself ?  Like I
want a user has permissions to upload and read artifacts,  but can't delete
any artifact.  Could you let me know how to do that? Thanks a lot.

   Looking forward your reply.

Cheers

Kesler