After May 13, the API returns screen_name and user_id with the access token and Twitter4J fails to parse the return properly.
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May 13, 2009
Fixed (REST): Background images uploaded via the API now take effect immediately (issue 451)
Fixed (OAuth): Using the authenticate method with force_login=true incorrectly returned the old users token.
There is still a known issue where the user is asked to accept the application each time. A fix is pending.
Feature (OAuth): When retrieving the access token via the access_token call the screen_name and user_id are returned as well.
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Twitter4J fails with following error.
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<?xml version="1.0" encoding="UTF-8"?>
<hash>
  <request>/statuses/update.xml</request>
  <error>Invalid / expired Token</error>
</hash>
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