Thanks,
sorry it was a typo, I've got the 2019 version.
What I've described happens with bbw.exe (32 bit) version. However if a try to use ASIO4ALL I'm able to use the audio interface embedded in my MOX8 YAMAHA keyboard.
With the 64 version of bbw64 (bb64.exe), in addition to forementioned errors my audio interface it is not visible at all and I can use only the WAS or MME audio driver.
Do you think it's an expected behaviour?