Numpy Runtime Warning with cinema export

Tested with 5.6.0-RC2, local MacOS

To recreate:

Sources -> Wavelet -> apply
Color by surface and RTData
File -> export scene
Keep options default, but change static to phi-theta or azimuth-elevation-roll
save

The export finishes, but I get this warning at the end:

/Users/stam/anaconda/lib/python2.7/site-packages/numpy/core/_methods.py:32: RuntimeWarning: invalid value encountered in reduce
return umr_minimum(a, axis, None, out, keepdims, initial) /Users/stam/anaconda/lib/python2.7/site-packages/numpy/core/_methods.py:28: RuntimeWarning: invalid value encountered in reduce
return umr_maximum(a, axis, None, out, keepdims, initial)
Finished exporting Cinema database!

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