PyRosetta Folding.py script

I am trying to run the folding.py sample script using the test_in.pdb, frag3 and frag9 files, but I am getting this error:

AttributeError Traceback (most recent call last)

/usr/local/src/pyrosetta/input/folding.py in ()
508 kT , long_inserts , short_inserts , cycles ,
509 jobs , job_output ,
--> 510 PyMOL_Mover_ip , disulfides )
511
512 ################################################################################

/usr/local/src/pyrosetta/input/folding.py in sample_folding(sequence, long_frag_filename, long_frag_length, short_frag_filename, short_frag_length, kT, long_inserts, short_inserts, cycles, jobs, job_output, PyMOL_Mover_ip, disulfides)
211 # 9. create a PyMOL_Observer for exporting structures to PyMOL

212 pyobs = PyMOL_Observer()
--> 213 pyobs.pymol.link.udp_ip = PyMOL_Mover_ip
214 pyobs.pymol.keep_history = True # load structures into successive states
215

AttributeError: 'PyMOL_Mover' object has no attribute 'link'
WARNING: Failure executing file:

I am currently running Ubuntu and using PyRosetta r47983 version, which I believe is the latest release for linux.