I keep getting an error that says invalid library when I try to upload. Any help is very appreciated!
Works for me.
It's impossible to help if you don't give more details like the full error message.
Arduino: 1.6.7 (Windows 7), Board: "Arduino/Genuino Uno"
Sketch uses 3,922 bytes (12%) of program storage space. Maximum is 32,256 bytes.
Global variables use 278 bytes (13%) of dynamic memory, leaving 1,770 bytes for local variables. Maximum is 2,048 bytes.
avrdude: ser_open(): can't open device "\.\COM1": The system cannot find the file specified.
Problem uploading to board. See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.
Invalid library found in C:\Users\Samsung\Documents\Arduino\libraries\BB8s: C:\Users\Samsung\Documents\Arduino\libraries\BB8s
Invalid library found in C:\Users\Samsung\Documents\Arduino\libraries\BB8s: C:\Users\Samsung\Documents\Arduino\libraries\BB8s
Invalid library found in C:\Users\Samsung\Documents\Arduino\libraries\BB8s: C:\Users\Samsung\Documents\Arduino\libraries\BB8s
It's just a warning message, not an error.
Why there is no COM1 on your system, I can not tell.