@MRSoClassroom, your error message suggests to me a problem with the Arduino IDE rather than with the Arduino program.
I am not familar with Macs but I have seen cases where the Arduino IDE choked on an Arduino code error probably due to a missing (or an extra) " so that it could not find the end of a piece of text.
Can you upload the Blink example program?
If you can't upload the Blink program I suggest you {A} shut down and restart the PC and if that does not solve the problem {B} delete and re-install the Arduino IDE.
...R