I use chinese clone of Arduino UNO rev3 on OSX El Capitan
It worked fine so far.
I'm trying to upload scatch to my Arduino but I always get this messege:
"avrdude: no programmer has been specified on the command line or the config file * Specify a programmer using the -c option and try again"*
I can see that Arduino is working well as the last code I successfully uploaded was I2C scanner and I can see it's output in serial monitor.
I tried to upload .hex with HexUploader, but it says that device is busy.
I googled it and cannot find any reference of this error.