Description of problem: I attempted to upload two .ogg files today so I could embed them into a document. I got a "Can't Contact Server" error when attempting to do it. Lee had to upload the files manually using REST. Lee seems to think it might have something to do with the JSON serializer we use from errai. This was on Chrome 35.0.1916.153
*** Bug 1115245 has been marked as a duplicate of this bug. ***
Uploading the "Really big image" from BZ#1026589 also results in an error.