EggBot Failed to connect

I am using Arduino Uno with CNC Shield. Have successfully flashed Eggduino firmware on the board. When I plug the USB in, the servo motor moves.

I get an error with the Inkscape extension: Failed to connect to Eggbot :frowning: when i click apply.

I can not understand what goes wrong. Would be great if I could choose a COM port somewhere.
What could be wrong?

hi. this issue was dozen times discussed. try search.

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