Emulator() call never hooks and returns - just runs MAME

[davepl]

I'm invoking it as follows, but it does not return - so I'm guessing it cannot hook the emulator.

emulator = Emulator("env1", 
                    roms_path, 
                    game_id, 
                    memory_addresses,
                    1,          # Ratio of frames reported
                    True,       # Render the little window
                    False,      # Throttle the emulator to realtime
                    5,          # 
                    False,      # Sound
                    True,      # Debug
                    "/home/dave/source/repos/CustomMameForToolkit/mame/mamearcade64")

I'm using the custom name and providing the path to it - any other ideas? I've tried with Debug set to True and Falsse, and without any of the optional params other than the binary_path, to no avail.

Thanks! Dave