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If a file doesn't get characterized correctly the first thing to do is check the resque admin panel. There you can view failures and restart jobs. If you see a clear stack trace pointing to a bug this may not help, but if you see a vague error about "deadlock?" this might work. Restart the job and then check the site to see whether the derivatives came through.

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are logged in as an admin user you can view the admin panel at `digital.chemheritage.org/admin/

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This process will improve once we have admin users in place; you'll just be able to log in and navigate straight to this page.queues`

What version of fedora is running?

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