I am just getting started with arduino, but I am having an issue with some 3.3V, 8Mhz Arduino Pro Minis. I am using a SparkFun FT232RL USB to Serial breakout (https://www.sparkfun.com/products/12731) to communicate with the board, using Windows 7 and the Arduino IDE.
The Pro Minis were blank when I got them, I am able to upload a single program (Blink), which runs successfully, but I am unable to upload subsequent programs. I get the error:
avrdude: stk500_recv(): programmer is not responding
Any idea what might be going on?