When I try to upload a sketch (including the "Blink" example) to my CBT, I get the following error:
avrdude: ser_open(): can't set com-state for "\.\COM10"
avrdude: ser_send(): write error: sorry no info avail
I'm using Arduino 1.6.0 on Windows 8. I verified that I can upload the "Blink" from My Computer to an Arduino Leonardo board using either the "Arduino Leonardo" board type or the "CANBus Triple" board type. I've also verified that COM10 is the correct COM port by making sure it appears when I connect my CBT, and disappears when I disconnect my CBT.
One thing I noticed, which may or may not be significant, is that my Arduino Leonardo board fist connects as "Arduino Leonardo bootloader" before disconnecting and reconnecting as "Arduino Leonardo" after a few seconds. When uploading to the Leonardo, the Leonardo also disconnects and reconnects as "Arduino Leonardo Bootloader. The CBT connects as "Arduino Leonardo" immediately when plugged in, and does not reconnect when I try to upload a sketch.
Any idea what to check next?