MP3 recording makes no sound

[Sakmandig]

Hello,

I would like to ask you for a help.
After many years a tried to do something on my Havian 30 but did not succeeded even though several years ago I was able to do that.

The problem is - when I record some MIDI file and then want to record it to the MP3 format, the recording works, but after the recording has ended and I play MP3 file, it makes no sound. The duration of this audio file is flowing but no music is playing. I tried it on Havian 30 itself, and then tried it with MIDI files from Pa 300 on USB put into Havian 30, but the result was the same (Pa300 has newer version of software than Havian 30). I tried various adjustments of volume and balance and also unmuted the instruments but nothing.

And that it is. As I have not been working with this instrument many years, I can not remember what I am doing wrong. Maybe it is only a small thing to adjust, I do not know. I have not been making any changes in the instrument, global, etc.. so I am not sure what to do.

So if you have ever met the similar problem I would be glad If you shared a solution with me.

Thanks a lot!