Setting up my 8x8 Matrix

Recently purchased an 8x8 Matrix and i'm trying to find a good library that actually works. Everytime I try to upload a code from a library i get this error message. (using an Arduino Uno)

avrdude: ser_open(): can't open device "/dev/cu.usbmodem411": No such file or directory
ioctl("TIOCMGET"): Inappropriate ioctl for device
Problem uploading to board. See for suggestions


Wrong section - Try reading the forum first - or use Google, I found a working library in less then a second.

Oh wow that's impressive.