Path not valid in setting up Firmware Updater

Want to upload new firmware and I cannot get path to avrdude to be OK.
C:\Users\Bengt\Desktop\wiring-v1.0.1-dev\tools\avr\bin; this is in system and user path on Win8

Latest Octoprint and Firmware Updater

Cheers Bengt

Have you tried entering the full path to the avrdude executable? Like this...


Sorry but it doesn´t either, so I will give up trying to update via Octoprint.

Is this a case where the firmware updater is passing the string through something that thinks "\" is an escape character? Try C:\\Users\\Bengt\\Desktop...

Just a guess, put the executable (plus any required files) in the root of C and report result.
Maybe the path is too long.