Getting error TypeError: trigger() got an unexpected keyword argument 'v'

[amitsant]

Config:

server_a:
id: '2c88ae84-7cb9-40f7-835d-c05e981f564d'
uri: 'mongodb://localhost:27017'
server_b:
id: '0d9c284b-b47c-40b5-932c-547b8685edd0'
uri: 'mongodb://17.213.43.174:27017'

Configured two host .. Getting the following error:

Traceback (most recent call last):
File "build/bdist.macosx-10.8-intel/egg/gevent/greenlet.py", line 390, in run
result = self._run(_self.args, *_self.kwargs)
File "/Library/Python/2.7/site-packages/MongoMultiMaster-0.0.4dev-py2.7.egg/mmm/slave.py", line 140, in replicate
for checkpoint in triggers.run():
File "/Library/Python/2.7/site-packages/MongoMultiMaster-0.0.4dev-py2.7.egg/mmm/triggers.py", line 30, in run
callback(**op)
TypeError: trigger() got an unexpected keyword argument 'v'
<Greenlet at 0x102ae94b0: <bound method ReplicationSlave.replicate of <mmm.slave.ReplicationSlave object at 0x102af3390>>('server_a', None)> failed with TypeError

Traceback (most recent call last):
File "/usr/local/bin/mmm", line 5, in
pkg_resources.run_script('MongoMultiMaster==0.0.4dev', 'mmm')
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 489, in run_script
self.require(requires)[0].run_script(script_name, ns)
File "/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/pkg_resources.py", line 1207, in run_script
execfile(script_filename, namespace, namespace)
File "/Library/Python/2.7/site-packages/MongoMultiMaster-0.0.4dev-py2.7.egg/EGG-INFO/scripts/mmm", line 122, in
main()
File "/Library/Python/2.7/site-packages/MongoMultiMaster-0.0.4dev-py2.7.egg/EGG-INFO/scripts/mmm", line 71, in main
args.func(config, servers, args)
File "/Library/Python/2.7/site-packages/MongoMultiMaster-0.0.4dev-py2.7.egg/EGG-INFO/scripts/mmm", line 114, in run_main
gevent.sleep(5)
File "build/bdist.macosx-10.8-intel/egg/gevent/hub.py", line 79, in sleep
File "build/bdist.macosx-10.8-intel/egg/gevent/hub.py", line 164, in switch
gevent.greenlet.LinkedFailed: <Greenlet at 0x102ae94b0: <bound method ReplicationSlave.replicate of <mmm.slave.ReplicationSlave object at 0x102af3390>>('server_a', None)> failed with TypeError

Any workaround for the same?