Can't read Lesson Notes on my Mac

[bgagnonius]

I just bought a new Macbook. I replaced the old PC. When I tried to open up the Lesson notes on the Mac the other day the Hangul would not show up. It only showed blank squares in places of the korean. Has anyone had this problem before and if so what can I do to fix it.

[tellville]

I have the exact same problem. Help!

[bgagnonius]

I keep having this problem. Some of the lessons work but some of them just come up with the squares when I open the PDF file. Will someone please respond to this so I can read the lessons on my computer and stud them...짜증나!!

[tbriley]

i haven't had this exact problem on my mac, but the pdfs in the newer lessons i am studying with show up blank. switching to adobe reader did the trick.