object has no attribute 'set_freq'

[ghostop14]

Running on the latest version of kali with Gnu Radio 3.7.10 and opening a new flow graph, when dropping the control on and hitting run I get the following error output with the default block settings. Any suggestions?

Traceback (most recent call last):
File "/home/activeuser/GNURadio/test_doppler.py", line 96, in
main()
File "/home/activeuser/GNURadio/test_doppler.py", line 84, in main
tb = top_block_cls()
File "/home/activeuser/GNURadio/test_doppler.py", line 62, in init
self.gpredict_doppler_0 = gpredict.doppler(self.set_freq, "localhost", 4532, True)
File "/usr/lib/python2.7/dist-packages/gnuradio/gr/hier_block2.py", line 92, in getattr
return getattr(self._impl, name)
AttributeError: 'top_block_sptr' object has no attribute 'set_freq'