Lightroom Panels go black LR CC 2015.10.1

This problem is EVEN worse with this upgrade...
The program is essentially unusable.  HELP!

I can minimize LR and open again and the panels are there.  But if I hit the Develop button, or try to go back to Library, or do most anything, the panels go black.

Details of my system:
Lightroom version: CC 2015.10.1 
Operating system: Mac OS 10
Version: 10.11 [6]
Application architecture: x64
Logical processor count: 8
Processor speed: 2.5 GHz
Built-in memory: 16,384.0 MB
Real memory available to Lightroom: 16,384.0 MB
Real memory used by Lightroom: 1,206.4 MB (7.3%)
Virtual memory used by Lightroom: 2,823.2 MB
Memory cache size: 1,221.5MB / 3,864.7MB (31.6%)
Maximum thread count used by Camera Raw: 8
Camera Raw SIMD optimization: SSE2,AVX,AVX2
Camera Raw virtual memory: 750MB / 8191MB (9%)
Displays: 1) 1680x1050, 2) 2880x1800

Graphics Processor Info: 
NVIDIA GeForce GT 750M OpenGL Engine