I fixed my problem!
I will tell you what fixed it in my case. I left my USB headset plugged in my computer. This made windows switch from my internal sound device (realtek) to my USB headset. Thus SWYH couldn’t initialize the ‘default’ sound device settings on windows! =)
Glad I got it solved and I hope I help someone with this same problem with this information.
BTW Great programm!! Thanks for making it and make it accessible with donations! =)