cpp conversion error in example

[tyler-abbot]

When running the example in Python 3.6, I get the following error:

  File "~/conda/envs/MOE/lib/python3.6/site-packages/moe/optimal_learning/python/cpp_wrappers/expected_improvement_mcmc.py", line 93, in multistart_expected_improvement_mcmc_optimization
    status,
TypeError: No registered converter was able to produce a C++ rvalue of type double from this Python object of type numpy.int64

I'm curious if this could be caused by using the newer version of numpy, as the older version listed in the requirements was giving me errors when I attempted to pip install.

[tyler-abbot]

I tried rebuilding using the older versions of numpy and scipy and still receive this error.

[kkim154]

I have this same error.
If you run this with Hartmann3 example, you do not receive this error.