I'm experiencing a similar problem...
When I push the upload button the arduino environment (0010 version) simply stop answering, and after a long time it comes back to life (sometimes it just don't come back and I have to finish the task) with that not in synk message (not in the BT computer now... later I'll put the exact error)
Another thing I noticed is that when I click the upload button the bluetooth connection apeears to be unstable.
I'm not sure, but I think that the BT computer is also using the TOSHIBA BT manager... How can I pair the ARDUINOBT without using that manager?
Sorry for the incomplete information, but maybe someone have experienced a similar problem and could help me.
ARDUINOBT - V06
ps.: Is it normal that the arduino environment stacks a little when entering the tools menu?
ps.2: I tried different reset times...