This is the traceback that I get:

<pre>
Traceback (most recent call last):
File "/usr/lib/rhythmbox/plugins/rb/Loader.py", line 44, in _contents_cb
(ok, contents, etag) = file.load_contents_finish(result)
gi.repository.GLib.Error: GLib.Error: g-io-error-quark: Operation not supported (15)
</pre>