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what aps that work on OS 10.6.8 will not work if i go to OS Yosemit
need OS 10.7 or higher for our new printer - currently have 10.6.8 Wiling to upgrade but what aps will be incompatible
need OS 10.7 or higher for our new printer - currently have 10.6.8 Wiling to upgrade but what aps will be incompatible