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I'm trying to get the TTF versions of various Google web fonts (Sanchez and Lusitania, for instance) to install on my iMac (system 10.7.5), using FontBook. I get a failed "system validation" note everytime. This is true whether I download using Terminal, from FontPro, from anywhere. It's just not letting the TTF fonts apply to my computer, making it hard to do comps in Photoshop....

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