Current Position:Home > Trying to upgrade to os 10.8.5  I now use 10.75  Bot the upgrade and downloaded. But a warning msg said that I need 10.8 first.  So trashed the dload, shut down machine thinking to go back and start over.Now the mac won't let me try re-download

Trying to upgrade to os 10.8.5  I now use 10.75  Bot the upgrade and downloaded. But a warning msg said that I need 10.8 first.  So trashed the dload, shut down machine thinking to go back and start over.Now the mac won't let me try re-download

Update:10-11Source: network consolidation
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Hi - I made a mistake, I guess.  I'm tring to upgrade to os 10.85.  I now use 10.75.  I bought the upgrade and downloaded it, completely I thought... but when I opened it to install it, a warning came up and said I need 10.8  in order to install 10.85.  So...after some thought, I trashed the down load and went back to the app staore to find 10.8.   the little box by the mountain lion image said 'downloading'/  Sure enough in a remote corner of the screen there was a little box that said it was downloading.   arrgh.   I'd already trashed what was downloaded in finder .   So I figured I'd stop the download in the little box (which I think was 10.8)  , turn off the mac.  and then reboot, and download the whole thing again.   
Now, when I go to the mountain lion image in the app store, and press 'download'  It won't let me download at all.   ??What to do??

The Best Answer

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Back up all data.
I've tested these instructions only with the Safari web browser. If you use another browser, they may not work as described.
From the App Store menu bar, select
Store ▹ Check for Unfinished Downloads...
You may be prompted to sign in. If that doesn't solve the problem, quit the application and continue as below.
Triple-click anywhere in the line below on this page to select it:
open $TMPDIR../C
Copy the selected text to the Clipboard (command-C).
Launch the Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). A folder should open. From that folder, delete the subfolder named "com.apple.appstore".
Quit Terminal. Launch the App Store and try again.