I use DVI fine with my 780 B rev and opencl is fixed. CUDA not working until updated.
Important notes from other problems i've seen
1. Installer checks for 3,1, 4,1, or 5,1. If you use multibeast default and system def of 3,1 it'll install fine. If you changed it, you may need to pacifist the install sine installer checks for a mac pro.
2. If FileNVRam is installed, setting web driver will actually try to set driver in nvram instead of modifying org.chameleon.Boot. You'll notice the nv web driver arg will be in box when you reboot like this, if you remove that it will NOT load the R331 driver.
If all you are trying to get is to fix rev B 780 and titan, you can just copy the opencl lib from web driver to 10.9.x driver to fix crash and retain cuda. If you are trying to use a 780TI, you must use whole driver and even then consider it very beta and untested