Directions on the horizon display as blocks instead of N, NE, E, etc.

Hello,

I just purchased SkySafari 6.8.2 for MacOS. On the horizon, instead of lettens for N, NE, E, etc, I only see blocks. Constellation names appear the same way. There was another post that mentioning the Arial font - yes, it is installed and I have not removed it. 

Any ideas?