Weird Crash when changing font style in Editor

I don’t want to report this as a bug yet because it happens on one of my computers, but not another. When I’m in the editor and want to change some text to a different font I:

Select the text
Click in the Type Field in the Formatting Bar to change the font.
Scriv crashes
This happens consistently on my work computer on multiple files. At home computer, it doesn’t do it.

Has this happened to anyone else recently?
Using Scrivener - 6th Oct 2015