I cant see exactly what is causing the error (I can only see so much in the screenshot). I would start again from the beginning. Rename your source video file to something simple like soccer.avi - make sure you do not add any special characters to your tags title or description in the basic section. The "permalink" is the link that is created to link to your video - in my case it would be https://d.tube/v/rgeddes/ followed by a bunch of alphanumeric characters. There should not be any "special" characters like a !, # or $. This has nothing to do with your key! I would rename the file and try again. Good luck!