unity 5.3.4 webgl failed running python

I was using 5.3.4 on a mac and it was working fine for webgl projects.

Now I get a python failing error.
I tried reinstalling unity but the error is still there and I can no longer do any webgl builds.

Failed running python “/Applications/Unity/PlaybackEngines/WebGLSupport/BuildTools/Emscripten/emcc” @“/Users/dan/Desktop/webgltest/Assets/…/Temp/emcc_arguments.resp”

stdout:
WARNING: sanity check failed to run [Errno 13] Permission denied: ‘/Applications/Unity/PlaybackEngines/WebGLSupport/BuildTools/emscripten.config_sanity’
stderr:

Try running unity in admin