Butterfly blockmesh not running but with no error

I installed butterfly as instructed here

with blueCFD-Core 2017-2, rhino 6.31, gh 1.0.0007 and butterfly 0.0.05. When install it and run it, I use run as admin for both cfd terminal and rhino.

import butterfly
returns blueCFD

which I think the cfd is connected with butterfly.
However, the blockmesh does nothing, nothing happens and it yields no error or warning message, but the outputs are null.

Stuck here all day. Any possible debugging?

Set the upper Toggle to True. This will write out the files necessary for execution.