Serial port disappears with El Capitan

Holland Hopson's icon

Hi all,
Anyone else experiencing flaky serial port issues after installing El Capitan? I use [serial] to grab sensor data from an Arduino. Sending "print" to [serial] usually generates a list of ports like "Bluetooth-Incoming-Port", "Bluetooth-Modem" and "usbserial-XXXXxxXX". Now at times all I see is "Bluetooth-Incoming-Port"; the others are gone. I suspect this is a driver problem and not directly Max-related. Thoughts?
Thanks,
Holland

Trond Lossius's icon