I found a special case which the binary stl files will be parsed as a ascii stl file (which is normal) and fail in an unexpected way, as well as a case where ascii stl files (and plausibly obj files) will fail when there is indentation present in the file.

Will push a fix in a few minutes.

nginx/1.10.2 mediagoblin 0.9.0

1. setup production environment using nginx and systemd
2. enable audio: ​https://mediagoblin.readthedocs.io/en/latest/siteadmin/media-types.html#audio

[plugins]
[[mediagoblin.plugins.geolocation]]
[[mediagoblin.plugins.basic_auth]]
[[mediagoblin.plugins.processing_info]]
[[mediagoblin.media_types.image]]
[[mediagoblin.media_types.video]]
[[mediagoblin.media_types.audio]]
[[mediagoblin.media_types.pdf]]

3. upload an audio file
4. see "413 Request Entity Too Large"

No further info in /var/log/nginx/mediagoblin.error.log and /var/log/mediagoblin/paster.log.

Using the API you get a HTTP 500 error when you try and send an "update" activity to update a comment. This is caused because the comment.unserialize takes more arguments (3) than being passed in (2).