Originally Posted by Thanos
Mac Yosemite 10.10 DP2 on a rMBP Late 2013 2.3GHz, 16GB RAM, Intel Iris Pro + nVidia GT750M 2GB

- Both 10.10 DP1 and 10.10 DP2 fail to launch. I get the splash window with the version number (1.0.115), it turns to a black screen, then switches back to the desktop with a "Video System Failure" message


Ok I managed to fix it.

I had the game installed on 10.9 and then upgraded to 10.10 DP. I was getting this error, and managed to launch the game by deleting the "Larian" folder in my Home directory, the game now starts fine.