This means there is a problem with the font used in the game: you either don't have it or the game didn't install it. Since it's hard to track down fonts used in games, I recommend to actually reinstall the application, but this time choose Custom or Advanced and configure the installation properties to include all the available components.
Additionally, if you know it's a free font, you can use DaFont website to download and install it.
To install the font, go to Start > Run > fonts. Drag and drop the TTF file into the folder and restart the game.