i just tried connecting my eD to my Pickit3 about 5 minutes ago. I didn't label either one. (i have one from each coop) so i decided to connect and see if i could read the firmware to find out which one is the right one.
after choosing the correct chip in the drop down, i clicked read. i got a message saying i needed to update the pickit 3's firmware.
did that, then got "operation failed" when i went to read the pic.
thinking that might be the new one, i connected the other one to be safe. it read it fine.
i went back to the original one, and it read that one fine again.
i did get it, but i don't know how to recreate the error.