plasmac error

program freezing.
terminal display
Original exception was:
RuntimeError: <exception str() failed>
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/bin/gmoccapy", line 61, in excepthook
lines = traceback.format_exception(exc_type, exc_obj, exc_tb)
File "/usr/lib/python2.7/traceback.py", line 141, in format_exception
list = list + format_tb(tb, limit)
File "/usr/lib/python2.7/traceback.py", line 76, in format_tb
return format_list(extract_tb(tb, limit))
File "/usr/lib/python2.7/traceback.py", line 100, in extract_tb
linecache.checkcache(filename)
File "/usr/lib/python2.7/linecache.py", line 68, in checkcache
if size != stat.st_size or mtime != stat.st_mtime:
RuntimeError: maximum recursion depth exceeded in cmp

Original exception was:
Traceback (most recent call last):
File "/usr/bin/gmoccapy", line 2316, in on_tbtn_estop_toggled
self._show_error((11, _("ERROR : External ESTOP is set, could not change state!")))
File "/usr/bin/gmoccapy", line 2283, in _show_error
self.notification.add_message(text, icon)
File "/usr/lib/python2.7/dist-packages/gmoccapy/notification.py", line 163, in add_message
self._show_message(self.messages[number_of_messages])
File "/usr/lib/python2.7/dist-packages/gmoccapy/notification.py", line 91, in _show_message
frame = gtk.Frame()