
While you can usually get away with minor errors found in the font validation routine (noted by a yellow circle with an exclamation point in it), you might want to investigate the cause for this problem. Then choose “Validate Fonts” from the File menu, and the program will check for conflicts, compatibility, and damage to your fonts. In Apple’s Font Book, you can click the All Fonts collection, followed by clicking a font and then pressing Command-A to select all fonts on the system. Depending on the program you use, there may be routines you can run to check your various fonts for conflicts and other errors. If you use a third-party font manager for your fonts, then be sure it is updated and then open it to manage your font collection. Also keep in mind that any changes you make outside of your home folder will potentially affect other users on your system.

Note that for any font-related procedure, you keep track of what you do and where you move or otherwise place fonts, to be able to undo any changes you make.

This procedure essentially involves identifying any problematic fonts, and then removing, disabling, or replacing them. There are various ways to troubleshoot and repair font problems in OS X. This is a relatively minor issue, especially if the font is an unmodified duplicate (click image for larger view). TroubleshootingĮxpanding the font with the error shows the only problem here is a duplicated font file. At other times, the symptoms may not be so apparent, such as a fault with only specific characters that cause problems when they are displayed.įor older and incompatible fonts, the system will usually just not load them however, there may be instances where it tries and results in a persistent error, slow loading, or some other odd behavior either with the system or with the specific program you are using, that can frustrate your workflow. In the case of damaged fonts, the system may attempt to load them and either not be able to and result in a hang or crash, or will load them and you will see corrupt symbols appear instead of the desired font face.
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Similarly, a user can install a font library for their uses, which may contain duplicates of fonts already in the system or global fonts folder, and again result in a font conflict. These take precedence over other fonts however, a program can install a font in the global font folder that is the same as one in the system’s font folder, and result in a font conflict. The system folder contains core fonts that Apple provides and which are required in unaltered states for OS X to run. These two library folders contain settings and resources that apply to the entire system and all users. In most cases, font conflicts occur because someone installed a duplicate of the exact same font, so one resides in a system library such as the system’s font folder (Macintosh HD > System > Library > Fonts), or the global font folder (Macintosh HD > Library > Fonts). In these cases, the system or application will use the first one it identifies, which may be the improper one and cause visual conflicts.įont conflicts and damaged fonts can cause a document to display garbled text (click image for larger view). However, if a font from a third-party with the name “Monaco,” or perhaps a modified version of Monaco is installed, then the system will identify two of the same type and not know which to use. For instance, the system’s internal font Monaco has a specific look and character layout for use with the system, and many programs rely on this font in this manner. Font Conflictsįont conflicts occur when two fonts of different type faces (or perhaps even more subtle difference) have the same internal name. When added and activated, they load into memory and are associated to programs by the system so programs can make use of them and show information about them.Īs a result, should a font be damaged, or perhaps conflict with another font, then not only might it lead to improper characters being used, or alignments being off in documents, but also crashes and hangs for programs that access these fonts.

Fonts are not just files, but rather system plug-ins, similar in ways to an extension or add-on application.
