serial setup...

I am using the Raspberry pi 3 to connect the SainSmart 2560+LCD1602. On the MEGA board the led's are green and a blinking yellow. I am able to compile the example code...when I try the upload I get

programmer is not responding...

I am a linux programmer and am stumped as to how to get the serial port configured. In the IDE, I only see the ttyACM0 port...tried symlinks as well...nothing.

also an error if I click the Burn Bootloader...

I have gone through the troubleshooting guide, I have google the crap out of this and nothing seems to work...

Any help would be thankful.

resolved after rebuild. thanks