I am following the steps on https://learn.adafruit.com/usbtinyisp/avrdude that webpage.
The usbtiny shows up in the device manager and the green LED on it is lit. When I type this in the command line:
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avrdude -c usbtiny -p m8
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avrdude: can't open config file "": Invalid argument
avrdude: error reading system wide configuration file ""
I am running windows 8.1 and have arduino IDE 1.6.13 installed. Please help...