Info:
ComputeShader.FindKernel can't find the program in shader. It works on windows glcore, so might be osx and glcore related issue. Bug is in small priority, because compute shader is not supported on osx any way, still worth to check it, might be cause of deeper issue.

Project Steps:
1. Play scene "test".
2. You should get exception:
Kernel 'CSMain' not found
UnityEngine.ComputeShader:FindKernel(String)
TestComputeShader:Start() (at Assets/TestComputeShader.cs:20)

It should throw compute shader not supported.