Error compiling for board Arduino/Genuino Uno

Hi, recently got a MacBook and downloaded the Arduino software. The problem I run into is that the software won't let me verify or upload to my Arduino Uno board. If anyone could help it would be appreciated. The error message is shown below.

fork/exec /Users/my name /Library/Arduino15/packages/arduino/tools/avr-gcc/4.9.2-atmel3.5.4-arduino2/bin/avr-g++: no such file or directory
Error compiling for board Arduino/Genuino Uno.

Try reinstalling your IDE. I have a Mac also, and it works fine, so te software does work on a mac ok.