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Help! I have suddendly lost Midi files sound in BiaB and cannot understand what is going on:
My set up in BiaB has not changed and both Audio files (Real Tracks) and midi files (MGUs) are working (playing) fine.

Only the (exterior) midi files do not do the job. They are working (there are loaded) and "play" (the cursor is moving normally within the chord sheet) but no sound...

The same ("exterior midi")files are "playing" normally (with sound) when loaded through an other program (Irfan View for ex.).
Aaarrgh! I understand I will have set(or undone) some obscure point in the preferences but cannot find which.
I use a Ketron (SD2) in my set up and can therefore play midi directly through the Ketron or set my internal VSTis (Forte). In both cases, (Midi) MGUs work, Midi files dont...
Any ideas out there?
Bernard