Comment 2 for bug 1615187

suggest Jorrell, you run it from terminal to get any diag-info.
ie. start term

$ df -hi
$ killall rhythmbox
$ rhythmbox

copy & paste the output please. I was unable to duplicate error.

fyi: "df -hi" will check you've some free display space; -i shows inodes.

if you don't want to cut/paste; use something like
$ df -hi >output_log
$ rhythmbox >>output_log
which will write app log to file output_log; the >> causes output to append to end of file. then you can just upload output_log (or whatever you call it).
killall command just to ensure it's not already running.