[op25-dev] GRC error

Hi everyone, New to GNUradio and OP25. I have the OP25 block installed in GNU Radio Companion and can build a flow graph with no problem. When I try to execute the flow graph I get this error: Traceback (most recent call last): File "/home/aaknitt/Documents/top_block.py", line 53, in <module> tb = top_block() File "/home/aaknitt/Documents/top_block.py", line 34, in __init__ self.op25_decoder_0.create() File "/usr/local/lib/python2.7/dist-packages/baz/op25.py", line 65, in create self.p25_decoder = op25.decoder_ff(self.op25_msgq) AttributeError: 'module' object has no attribute 'decoder_ff' I'm guessing this is because I don't have something installed properly, but I can't put my finger on how to remedy the problem. Any advice or suggestions would be appreciated. Regards, Andy