Mozilla Raindrop fails tests on Ubuntu with "exceptions.TypeError: url must be str, not unicode"

"This has already been fixed. See the discussion at getsatisfaction:
http://getsatisfaction.com/mozilla_messaging/topics/twisted_errors_on_run_raindrop_py

You basically need to update your raindrop codebase. If you installed using mercurial, change into the root directory of source code and do a ""hg pull"" followed by an ""hg update"". That should fix it."