Hi, have come across an issue when burning a bootloader with the IDE.

The IDE sends the 2 avrdude commands too quickly without the AVRispMK2 getting a chance to reset.

I tested this with a batch file by copy/pasting the avrdude commands from the verbose output of the Arduino IDE window.

I was able to reproduce the issue by sending the commands 1 after another immediately using a batch file.
I tried the same again with 'wait 1' to add a 1 second delay to the batch file between commands and the issue was resolved.

This issue may depend on speed of computer.
It would be good to experiment with delays as a full 1 second delay may not be required.

If anyone has any idea how i might add and accurate sub 1s delay to a batch file I'd be happy to test and report my findings.

PC is an i5 3570K, 8gig, Win7x64, Intel SSD

Cheers.