Core Apps » KeySync

If I try to use KeySync GUI to sync my keys from Pidgin to ChatSecure running on a Moto X Play (which is recognized as Moto G), occurs this error:
Parsing gnupg
Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib/python2.7/lib-tk/Tkinter.py", line 1540, in call
return self.func(*args)
File "/usr/bin/keysync-gui", line 508, in convert_and_sync
self.convert()
File "/usr/bin/keysync-gui", line 478, in convert
otrapps.util.merge_keydicts(keydict, properties.parse())
File "/usr/lib/python2.7/dist-packages/otrapps/gnupg.py", line 31, in parse
packets = list(data.packets())
File "/usr/lib/python2.7/dist-packages/pgpdump/data.py", line 30, in packets
total_length, packet = construct_packet(self.data, offset)
File "/usr/lib/python2.7/dist-packages/pgpdump/packet.py", line 819, in construct_packet
packet = PacketType(tag, name, new, packet_data)
File "/usr/lib/python2.7/dist-packages/pgpdump/packet.py", line 470, in init
super(SecretKeyPacket, self).__init__(*args, **kwargs)
File "/usr/lib/python2.7/dist-packages/pgpdump/packet.py", line 343, in init
super(PublicKeyPacket, self).__init__(*args, **kwargs)
File "/usr/lib/python2.7/dist-packages/pgpdump/packet.py", line 21, in init
self.parse()
File "/usr/lib/python2.7/dist-packages/pgpdump/packet.py", line 560, in parse
"Unsupported GnuPG S2K extension, encountered mode %d" % mode)
PgpdumpException: Unsupported GnuPG S2K extension, encountered mode 1002

The same occurs if I use the version cloned from GitHub. The version I used is KeySync 0.2.2.