When opening a file, I have some times the following message:
Cancel or Esc has no effect.
I have to close the Progress window via the Windows TaskManager.
BETA (6.0.17325.8311, 2017-11-21)
I have closed Rhino and installed rhino_en-us_6.0.17332.10241
I open a copy of the same file, all seems in order, the Progress windows does not appear.
This happens more a less once a week, working 1/3 with Serengeti.
