Video crashes when try to play Unity 2017

Every time I try to import a video into Unity and play it in the editor it crashes. (OSX 10.9.5, Unity 2017.1)

I have so far tried it with an MP4 and MOV. Are there any movie types that won’t crash Unity?

The report says the error is:

Dyld Error Message:
Symbol not found: _CMTimeMultiplyByRatio
Referenced from: /Volumes/VOLUME/*/Unity.app/Contents/MacOS/Unity
Expected in: /System/Library/Frameworks/CoreMedia.framework/Versions/A/CoreMedia

Your specifications claim that Unity works on OSX 10.8 above. But the documentation says that CMTimeMultiplyByRatio only works on OSX 10.10 above.

It should at least fail gracefully for OSX 10.9

I have the same problem. There´s no preview possible.