It took awhile but when I figured it out it was the old bug in Windows and Word.
You need a printer installed for some fonts to work.
I'm using Word 2010 and have a file that, as far as I can tell, is entirely in one font. Yet when I try to insert a bullet point, it keeps changing the font for that bullet point to Times New Roman (requiring me to change it back). Seems like a simple issue, but I can't find a fix anywhere. Anyone know?