The CircuitStudio supported operating systems are:
Microsoft Windows version 7, 8, 10, preferably 64-bit.
When using a Mac, use Bootcamp to enable Windows to be installed natively on the Mac. Bootcamp is a free download from Apple. Then boot into Windows to use CircuitStudio or boot into OS X to use the Mac software.
Alternatively, CircuitStudio will run in the popular virtual machines (VM's) such as Parallels, or VM Ware Fusion, or Oracle VirtualBox. Microsoft Windows needs to be provided to the VM when setting it up. This allows you to leave the host operating system such as OS X running and copy and paste files between the VM and the host.
The host machine, i.e. your physical computer, determines which VM software to select, i.e. for a Linux host you may choose VirtualBox. When using virtual machines, rotating your PCB in 3D may not be as fast or smooth because it is using a virtual graphics card, not the physical GPU on your machine. Also the overall performance may be a little slower.
CircuitStudio relies on DirectX with 9.0c as the minimum specification, thankfully most GPU's and VM's support this now.