TypeError: C++ rvalue of type unsigned long from numpy.int64

[Joel]

Hello, when attempting to run one of the example cases, I receive this error. Does anybody know what the solution to this could be?

 

htpc@htpc:~/Downloads/PyFR/examples/inc_cylinder_2d$ pyfr run mesh.pyfrm inc_cylinder_2d.ini -b opencl 

 

Traceback (most recent call last):
  File "/usr/local/bin/pyfr", line 9, in <module>
    load_entry_point('pyfr==1.7.0', 'console_scripts', 'pyfr')()
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/__main__.py", line 110, in main
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/__main__.py", line 235, in process_run
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/__main__.py", line 227, in _process_common
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/integrators/base.py", line 195, in run
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/integrators/dual/multip.py", line 244, in advance_to
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/integrators/dual/pseudosteppers.py", line 142, in step
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/integrators/dual/multip.py", line 166, in _rhs_with_dts
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/solvers/baseadvecdiff/system.py", line 45, in rhs
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/backends/base/backend.py", line 176, in runall
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/backends/opencl/types.py", line 114, in runall
    class's __getattr__ method; this is done by raising AttributeError.
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/backends/base/types.py", line 326, in _exec_nowait
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/backends/base/types.py", line 311, in _exec_item
  File "/usr/local/lib/python3.5/dist-packages/pyfr-1.7.0-py3.5.egg/pyfr/backends/opencl/provider.py", line 50, in run
  File "/usr/lib/python3/dist-packages/pyopencl/__init__.py", line 512, in kernel_call
    global_offset, wait_for, g_times_l=g_times_l)
TypeError: No registered converter was able to produce a C++ rvalue of type unsigned long from this Python object of type numpy.int64