Ok, I didn't see anything that stood out in the mass of messages going across the screen when trying to install on Ubuntu.  But something must have gone haywire.  I get the following when I try to run the executable:

CUDA error in func 'getNumDevices' at line 112 : no CUDA-capable device is detected.
terminate called after throwing an instance of 'std::runtime_error'
  what():  no CUDA-capable device is detected
Aborted (core dumped)


Any ideas where I missed something?  I used the 110 branch.  This machine has the 750ti cards in it, but appears it isn't detecting them?  Right now I only have one card connected.