Hello Paul.
I really wish I had any more information to give you... I redownloaded the plugin, and again it simply closes right after the splashscreen. I tried installing the 2012 plugin and Revit starts fine, but there is no Add-Ins tab where to access the plugin.

After uninstalling the 2013 ...

Running Windows 8, 8GB ram, GeForce GTX 460m (mobile), Driver 320.57, CUDA 5.5.1.

Octane's latest version is happily humming along as im typing, rendering from sketchup.

Thanks Paul!

I don't know if anyone has run into this problem. After installing the plugin, Revit 2013 does not even load fully. After the splashscreen dissapears and the recent projects screen shows up, Revit simply closes, and windows tries to find a solution, without giving me any error number I can reference ...