Internal Server Error
Galaxy was unable to successfully complete your request
An error occurred.
This may be an intermittent problem due to load or other unpredictable factors, reloading the page may address the problem.
The error has been logged to our team.
Since I am 'our team', I'd like to find out how to see the log! None of the logs under /home/galaxy indicate a problem (that I notice), but uwsgi.log does list a GET command for the workflow:
[28/Jul/2015:16:31:50 +0000] "GET /api/datatypes?extension_only=False& HTTP/1.1" 200 - "