MacOS – Every single 3rd party font gives me validation serious errors

errorfontfont-bookmacos

I recently got El Capitan 10.11.6 installed on my MacBook. Now whenever I try to install ANY 3rd party font, they fail font validation in the Font Book app.

The error is always:

1 serious error was found. Do not use this font.

This occurs for ALL 3rd party fonts. Fonts I download from Adobe Typekit. Fonts I download from Google Fonts, etc. Every single one.

Some websites suggest that I go ahead and install the font anyways. I tried this and certain programs become unresponsive. For example Illutrator CC 2015.3 will not even start up (gets stuck at Initializing) but then once I remove the "bad" font, Illustrator works fine again.

What am I missing here? How do I fix this problem?

UPDATE

As requested here is the Validation Error report from installing a font. The only thing I changed is the network path name for the font location (it was on a network drive).

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<array>
    <dict>
        <key>file</key>
        <string>Nudista Medium.otf</string>
        <key>path</key>
        <string>/network/path/nudista/Nudista Medium.otf</string>
        <key>report</key>
        <array>
            <dict>
                <key>fail</key>
                <integer>1</integer>
                <key>fontname</key>
                <string>Nudista Medium.otf</string>
                <key>pass</key>
                <integer>0</integer>
                <key>ruleslist</key>
                <array>
                    <dict>
                        <key>author</key>
                        <string>com.apple.ATS</string>
                        <key>kATSFontTestDescriptionKey</key>
                        <string>This font has failed one or more of a series of tests of the font interacting with OS X. If you use this font, you may experience text problems or application crashes. Please contact your font vendor for a repaired version of this font.</string>
                        <key>kATSFontTestNameKey</key>
                        <string>System Validation</string>
                        <key>result</key>
                        <false/>
                        <key>severity</key>
                        <string>ERROR</string>
                        <key>version</key>
                        <integer>65536</integer>
                    </dict>
                </array>
                <key>run</key>
                <integer>1</integer>
                <key>warn</key>
                <integer>0</integer>
            </dict>
        </array>
    </dict>
</array>
</plist>

Best Answer

I've been having the same problem. What has worked for me has been to install an app called Typelight. I go into Typelight, open the font that I downloaded to my computer but didn't install yet, and then save the font to my DESKTOP. It doesn't work if I save it anywhere else, don't ask me why. After that, I open the font by clicking on it on my desktop, then I click "install", and it works with no error messages. More of a hassle, yes, but at least it's a way around the problem.

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