In Finder click the Go menu and press the Option key to make the user's Library show up in the menu. Wallet.dat is under Library->Application Support->Bitcoin. On the new computer install Bitcoin-Qt and replace the wallet.dat with your backup.
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BoardProject Development
Re: Any Mac OSX 10.8 Developer able to add notification center notifications?
In Mac OSX 10.8.2, when I minimize the bitcoin wallet, it doesn't ever show up again, when I click the app in the dock also when I click show all windows it doesn't up. So this is probably a bug, that should be check out it has happened like 4 times to me.
This happens to me too. (tested on 3 different machines)
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BoardBitcoin Discussion
Re: Win 10 BTC: Guess the price on February 1st (no entry fee)