Looks like a problem with win 10 audio. I have a roland Octacapture soundcard, and use it under ASIO almost always. THis looks like it wants the wdm drivers, but I can no longer find them in the control panel.
>"C:\Program Files (x86)\SoundGrain\SoundGrain.exe"
pyo version 0.9.0 (uses single precision)
Assertion failed: FALSE, file src\hostapi\wdmks\pa_win_wdmks.c, line 1054
old problems for trying to fix it...leaving it in case anyone else gets these bright ideas.
I try launching with python 3.6, .7, and .7 and get the following error
C:\Users\rich>py -3.6 "C:\Program Files (x86)\SoundGrain\SoundGrain.exe"
File "C:\Program Files (x86)\SoundGrain\SoundGrain.exe", line 1
SyntaxError: Non-UTF-8 code starting with '\x90' in file C:\Program Files (x86)\SoundGrain\SoundGrain.exe on line 1, but no encoding declared; see http://python.org/dev/peps/pep-0263/ for details
Update: this is from trying to set the right python environment and is caused by trying to launch a no-python binary (SoundGrain.exe) because I thought my trouble was from having the wrong python environment. I put 3.6 as the valuse for env. var. PY_PYTHON py to fix that after some google-fu, then found I did not have the prerequisites. Had to specify which python to install those under:
>C:\Users\$USER\AppData\Local\Programs\Python\Python36\python.exe -m pip install Markdown
and do the same for the other pre-reqs after installing python 3.6
Now I am getting an audio driver problem as described above.