Problem rendering MIDI tracks

[Frontface]

Hi,
In an effort to reduce the load on my CPU I rendered MIDI tracks after I have "fixed" them. Recently (Waveform Pro 11 11.5.9) I ran into a strange experience. When I rendered MIDI tracks (using the same process that has worked flawlessly in the past), I immediately noticed that the length of the rendered (WAV) file, was much shorter than the original MIDI track. When I listened to the rendered track I got a bigger surprise! The speed of the track was almost double what the original MIDI track's speed (tempo/BPM) was! It sounded like the track was playing back at 2X the normal speed.

I couldn't find any adjustment and the BPM did not indicate any change from the original.

I opened a ticket through Tracktion but they are as baffled as I am.

Anyone run into this or have any ideas what happened?

I updated my app to 11.5.9 in early March when it was released and this was the first time I've tried to render a MIDI file since the update.

Thanks.