try pressing the reset button. Probably the upload will work. It seems your auto reset is not working well.
I am seeing this same problem with my RBBB freeduino connected with a usb to ttl ftdi cord.I can repro the problem consistently and if I unplug the cable from the computer then plug it back inI will be able to load the next time, but not again until I unplug/plug.hmmmmm. Anyone else seeing this?
I would like to clarify that the subject of this thread should be "Problem with Freeduino Serial v1.0 board". Freeduino Serial v2.0 board is MAX232 (or compatible chip) based and eliminates the problems reported on this thread. The confusion comes from the fact that Freeduino Serial v1.0 board was based on the "Arduino serial v2.0" board, with the "autoreset" hack.