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2. Hold down the alt/option key on your keyboard, and click the App Store icon.
3. With alt/option key held, click on Purchased
4. With alt/option key held, click on OS X Lion
5. With alt/option key held, click on Install
The Installed button should change to Install, allowing you to re-download Lion. When the download finishes, the app will automatically open. The updated 10.7.2 Install Mac OS X Lion App can be found in the Applications folder.
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If this doesn't work for you, try creating a new User account. You can delete it later.
1. Open System Preferences
2. Click on Accounts
3. Click Lock Icon
4. Click (+) to add a new User
5. Create a new Admin User
6. Log out, and log into new User
7. Proceed with steps above.
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