For more information, see Troubleshoot font problems (Mac OS X) or see the Apple Support article 'Mac OS X: Font Locations and Their Purposes' on the Apple website at. Note: Mac OS X installs and manages fonts differently than previous versions of Mac OS. After you install a font, it is sometimes necessary to restart the computer for the font to become available. If the font doesn't appear in another application, reinstall the font. Make sure that the font appears in another application to verify that the font is installed correctly. Make sure that the font style (for example, Tekton Bold, Optima Oblique) is installed or change the font style to one that's available in InDesign or InCopy. In such cases, select the plain version of the font in InDesign or InCopy. Some fonts, such as Critter, don't include bold or italic styles. InDesign and InCopy support only installed font styles. Solution 2: Install the font style or use only installed font styles. If you use a font management utility, then consult the documentation included with the utility for instructions. If the fonts are already installed and you use a font management utility, make sure that the fonts are activated. Install the missing fonts (see 'Installing fonts' in InDesign or InCopy Help for more information). Solution 1: Install or activate the missing fonts. Do one or more of the following solutions: