To this...http://arduino.cc/en/Tutorial/ArduinoISP...add step 1.5...1.5 Disable auto-reset. Instructions are available here...http://www.arduino.cc/playground/Main/DisablingAutoResetOnSerialConnection...then try again.
if it can be helpful, sometime i have the same error trying thru my 2009 to burn atmega328 st.alone.i just need to manual press reset button on the 2009 and click the upload button on the screen. it works.
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