I have never been able to use Lightroom CC Desktop version. I updated to version 1.5 a few days ago. My problem still remains. I had similar problem with Lightroom Classic CC and Photoshop CC. That problem was solved by disabling GPU (AMD). This, however has not helped for Lightroom CC. Lightroom CC does not open, so there is no way to adjust preferences. I have included screenshot below. I have been sending crash reports to Adobe, no use. This is highly frustrating, to say the least!