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Message: <blockquote data-quote="ajcgn" data-source="post: 1639088" data-attributes="member: 216270">I started having GPU problems when I updated to Yosemite on my early 2011 15" Macbook Pro in November. When I updated to the most recent version last week, my Macbook bricked on me. The computer repair guy was able to get my computer to work with Mavericks, but now I can't use many of my apps. I had a back up copy of the apps, but many of them were updated since November. I get the following message: "You have OS*X 10.9.5. The application requires OS*X 10.10 or later"Is there any way of getting older versions of the apps that would work with Mavericks?Thanks</blockquote>

Verification: How many occurrences of a n-u-m-b-e-r between "d" and "f" in this example...(sdgs6ngklu3gd#f9%)?