Can you copy/paste the error you get ?
Is pyQt installed ?
if yes, here we go for a debug procedure
Open a terminal and run python then copy paste these lines:
import pypot.dynamixel
ports = pypot.dynamixel.get_available_ports()
baud = [57142, 1000000, ]
for p in ports:
for b in baud:
with pypot.dynamixel.DxlIO(p, b) as dxl:
print 'opened port {} with baudrate {} and dectected motor ids:{}'.format(p, b, dxl.scan(range(10)))
Are these command run correctly ?