1: Login as admin
2: Choose Upload Recording
3: Fill in the blanks and select a file to upload
5: wait for failure.
Those are the steps that I did at least and I'm no longer able to upload videos to encode.
Here's the kicker when I go to http://mhtest.virtuos.uos.de:8080 and try the same steps my videos fail to encode as well however lkiesow was able to use the same video I uploaded and it worked.