Diecimila avrdude errors

I am working with a Seeeduino (Diecimila) for the first time and am getting the following error on attempting to upload a sketch (any sketch). I have successfully uploaded on other Arduino units from the same system previously.

error message: avrdude: stk500_getsync(): not in sync: resp=0x00 avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x51

OS: XP Pro Board: Seeeduino v1.1

I reviewed the FAQ and didn't see anything applicable.

Any recommendation much appreciated.

Thanks, red_darrin

problem solved - rookie mistake. I thought I'd verified the USB connection, but that seems to have been the issue. Sorry for not catching that prior to posting!