Paulusjacobus:
so I can change the error path char ("/") from"c:\users\paul\downloads\arduino-nightly\hardware\tools\avr/etc/avrdude.conf"
into :
"c:\users\paul\downloads\arduino-nightly\hardware\tools\avr\etc\avrdude.conf"
I really don't think that's the problem because a successful upload on my Windows 7 system uses this command:
C:\Program Files (x86)\arduino-nightly\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\arduino-nightly\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM21 -b115200 -D -Uflash:w:C:\Users\per\AppData\Local\Temp\arduino_build_861712/sketch_sep15a.ino.hex:i
It has no problems at all with the mixture of front and backslashes. Windows is fine with either.
Paulusjacobus:
where is that path configured or scripted so I can change the error path char ("/")
Change line 96 of c:\users\paul\downloads\arduino-nightly\hardware\arduino\avr\platform.txt from:
tools.avrdude.config.path={path}/etc/avrdude.conf
to:
tools.avrdude.config.path={path}\etc\avrdude.conf
The reason they had to use the frontslashes is because the same platform.txt file is used for all operating systems and only Windows uses backslashes. It's definitely not a cut and paste error.