error while sending tracks to librefm

[Treedsss]

Hi! I've been recently having this issue while sending tracks to librefm, after 250 tracks sent, it gives me this error

Traceback (most recent call last):
File "gui.pyc", line 364, in run
File "scrobble.pyc", line 68, in add_track
File "scrobble.pyc", line 59, in submit
File "urllib2.pyc", line 126, in urlopen
File "urllib2.pyc", line 398, in open
File "urllib2.pyc", line 511, in http_response
File "urllib2.pyc", line 436, in error
File "urllib2.pyc", line 370, in _call_chain
File "urllib2.pyc", line 519, in http_error_default
HTTPError: HTTP Error 500: Internal Server Error

what should I do? thanks a lot!!