Access violation when creating Screen object on Mac.

[Andy608]

Hi, so I recently posted an issue getting nanogui to compile on my mac as I was having issues with Eigen compiling. I completely rewrote my cmake file and used nanogui as a submodule and cmake compiles fine now with no weird errors.

The only problem now is that when I create a screen object I get a read access violation.

Following the call stack, it seems to get stuck here:

Any help would be appreciated.