PreenFM > preenfm2 and preenfm3

Can't save sysex to midi usb

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kx3:
I can't save via USB to MidiOx.
No problem with Din5.
Very unreliable via USB (sometimes it works, sometimes nothing shows in Midiox)
I have a several Midi Interfaces and no problem with them using Preen Din5 (2 Midi express and RayDat)

Win7
Firm 2.07

Xavier:
Hi,
Could you describe with more details what you're exactly doing ?
Thanks,
Xavier

kx3:
Save-Syx-Send Patch = message "Done" appears.

If 1- Midi OX waiting for Sysex. Midi port set to PreenFm2. Nothing happens.
If 2-Midi OX waiting for Sysex. Midi port set to "anything on wich Preen is connected via DIN5".  Dump succesfully received.

If I repeatedly dump the single sysex patch, once in a while it shows in the input monitor.
It looks like corrupted message is received (like no status byte is received as nothing is shown in the monitor)

Problem occurs only via USB port when sysex is involved. With standard message (upon reception) USB port works just fine.
I tried with different buffer size with no success.

Xavier:
Thanks for the details (i've modified your subjet).
Sounds like a bug.
Don't know if it's easily fixable as the USB library is the one from STM (the MCU manufacturer).

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