System Information
MBP 15" 2015, OS X 10.10.3, AMD Radeon R9 M370X
Blender Version
Broken: 2.75 RC
Short description of error
User Preferences / system, no compute devices other than CPU available.
Exact steps for others to reproduce the error
MacBook Pro with discrete M370X graphics seems not to be working as OpenCL compute device.