Hi,
it’s a relief to hear that I am not alone 
I am using the German version as well, if that is of importance.
Out of interest - could you try to play a sound with psychopy? Do you get the following error (see the link). In other words, are my two problems with Psychopy due to the same error?
https://discourse.psychopy.org/t/playing-a-sound-with-pyo-in-either-builder-or-coder/3006?u=lukaspsy