[Leica] Bug in Lightroom CC 2015.2.1 HDR and Panorama

[Robert Rose]

The merge to Panorama and HDR in Lightroom is not working in CC 2015.2.1.  

Spending time trolling the Adobe Support Community (a considerable amount of time which should have been put to use taking pictures or sleeping) discloses that this is a known problem with the latest upgrade 2015.2.1 and resulted when Adobe engineers tried to fix some other problem in 2015.1.1.

The workarounds suggested are:
(a) downgrade to 1.1.1,
(b) buy some other program (such as PTGUI for panorama or Photomatix for HDR),
(c) wait for Adobe to fix this, or
(d) stop making panoramas or HDR images.