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<blockquote data-quote="Raz0rEdge" data-source="post: 1760828" data-attributes="member: 110816">OS X (pronounced as OS Ten by some) is almost a &quot;brand&quot; name like Windows. Each of the versions (cat names before, locations in California more recently) represent the actual versions like XP, Windows 7, 8, 8.1, 10 and so on..Jumping from 10.6 to 10.7 was a big deal since 10.7 dropped all support for Universal apps which worked on PowerPC based Macs since at that point in time Apple had fully switched over to Intel-based Macs. With each version of the OS, some UI or outwardly thing changes, but more importantly the underlying API changes and not all of them are backward compatible.For a while, most apps required 10.6 Snow Leopard as the minimum, now they've moved onto 10.10 Yosemite as the minimum..You'll want to go through the apps you have (go back to the developer sites) and see what versions they support and ensure you have the latest versions of them.</blockquote>

[QUOTE="Raz0rEdge, post: 1760828, member: 110816"] OS X (pronounced as OS Ten by some) is almost a "brand" name like Windows. Each of the versions (cat names before, locations in California more recently) represent the actual versions like XP, Windows 7, 8, 8.1, 10 and so on.. Jumping from 10.6 to 10.7 was a big deal since 10.7 dropped all support for Universal apps which worked on PowerPC based Macs since at that point in time Apple had fully switched over to Intel-based Macs. With each version of the OS, some UI or outwardly thing changes, but more importantly the underlying API changes and not all of them are backward compatible. For a while, most apps required 10.6 Snow Leopard as the minimum, now they've moved onto 10.10 Yosemite as the minimum.. You'll want to go through the apps you have (go back to the developer sites) and see what versions they support and ensure you have the latest versions of them. [/QUOTE]

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