code wont upload to arduino starter kit My operating system : OS X EL CAPITAN

Please help I was trying to do project 05 Mood cue of the arduino starter kit. I completed setting up my board and writing the code and when I tried to upload I got this error message: 

Arduino: 1.7.10 (Mac OS X), Board: "Arduino Uno"

Sketch uses 1,030 bytes (3%) of program storage space. Maximum is 32,256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2,039 bytes for local variables. Maximum is 2,048 bytes.
avrdude: ser_open(): can't open device "/dev/tty.usbmodem1411": Device not         configured
ioctl("TIOCMGET"): Inappropriate ioctl for device
Problem uploading to board.  See http://www.arduino.cc/en/Guide/Troubleshooting#upload for suggestions.

  This report would have more information with
  "Show verbose output during compilation"
  enabled in File &gt; Preferences.


Can someone please help me?
Thank you Harry i managed to fix it by downloading CH341SER_MAC.zip just in case someone has the same problem wch.cn/downfile/178