Strange rendering bug in one eye

I'm working on the next release of Flying in Dreams, and I'm getting a weird rendering bug, only on Mac. It just started today.



This is on OSX Mavericks. The PC build has no issues.

If I export on Mac to x86_64, all I get is a blue screen. So I'm exporting to x86.

Also, the lens correction / abberation / fog shaders all run fine when running from within Unity (both Mac and PC)