Xavier's note : I've extracted this post from the other thread which was about pfm3.
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I am experiencing this problem as well I am afraid.
Previously my PreenFM2 was working fine via USB. Now it is not recognised as a device in 'audio midi setup' and hence I cannot use the editor or control the Preen from my computer. Most exasperating. Is there anyway to 'reinstall drivers' or anything ? I can enter USB disk mode and copy files across so it's not hardware.
I also have 'USB midi IN/OUT' enabled in the tools menu.
I have tried a number of leads etc and re-booted both the preeen and the computer numerous times.. what else can I try ?
MACOSX 10.10.5
Thanks,