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  2. Sample Libraries
  3. Synchron Series
  4. Synchron Pianos crashing constantly on macOS
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    Synchron crashed this time the moment I loaded it and pressed a MIDI key. Kawai VPC -> Saffire 18i8 (1st gen.) via standard MIDI cable (not USB). Turned on VPC this time after loading Synchron.

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    Another crash upon pressing a MIDI key. It had just worked a moment ago.

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    After an apparent MIDI glitch, I powered the Scarlett 18i8 off and back on. Synchron no longer recognized the MIDI device (VPC1), even though the 18i8 to which it is connected was still shown in Synchron settings. Something about this process triggered another crash.

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    Pressed a MIDI key. This time I tried plugging the VPC1 directly into the iMac via USB.

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    Looks like I might have found the culprit! It might be an issue with the Focusrite Saffire's MIDI in (via standard MIDI cable). Mine is a 1st-generation 18i8. Maybe it goes into a power saving mode and causes a problem with Synchron on wake? This wouldn't explain every case, though, since often it crashes at random while playing Synchron.

    In any case, I've now connected the Kawai VPC1 directly to the iMac using USB. The Mac has gone into sleep mode and woken up, yet Synchron so far has not crashed with this setup.

    The only downside with this setup is that it costs me a USB port, but I can live with that small limitation if it means Synchron won't crash all the time.

    It would still be helpful for VSL to look at this case, and I'd be grateful for any relevant info. I can keep you posted if the software crashes with this setup, but so far, so good.
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    Good news: So far, so good. It does appear that the Saffire interface (at least my 1st-generation 18i8 model, connected to the controller via standard MIDI cable) must be the cause of the frequent crashes.

    Since last evening I've had the VPC1 controller connected directly to the iMac via USB. So far there haven't been any crashes since switching to this setup. Even the usual triggers such as putting the Mac into sleep mode, or turning the controller keyboard off and back on, haven't caused a crash so far.

    I'd still like to know whether the hundreds of crash reports sent over the past few months were received by VSL, as this would be important for debugging any future issues. Can anyone confirm?
  • Andreas8420A
    VSL Team
    Andreas8420A

    Continued via Email Support!

    @Alkan: I updated your email case. Best regards, Andreas

    VSL Team | Product Specialist & Media Editing