Error when I try to upload

Hi, I build the printer Prusa2, but now, I try to upload Splinter with the arduino IDE 022 + sanguino023r4 and arduino IDE 023 + sanguino023r4.

In this IDE the compilation is good, but when I upload arduino say: "Binary sketch size: 16426 bytes (of a 63488 byte maximum)
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_disable(): protocol error, expect=0x14, resp=0x48"

I select before the sanguino board and portUSB.

Thank's.
Diego.

Me helps editing file boards.txt in Hardware\Sanguino folder. Need edit string atmega644.upload.speed=56700 to atmega644.upload.speed=38400, that is down uploading speed. Also can replace usb-wire more quality with antijamming.

Scanvs good job!

Now, I can upload sprinter in Sanguino

Sincerely...thanks for the great help