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    Adobe Reader 8.1.1 -   How to Uninstall ?

      I recently downloaded Adobe 8.1.1 and have not been able to open pdf files on other browsers. I have tried to change(repair)the download, then tried removing the download hoping that re-installing would help. However,when I hit Start, go to Settings, then Control Panel, then Add / Remove programs, and press "Change" I get the following message:

      "The patch package could not be opened. Verify that the patch package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer patch package."

      When I press "Remove" the following message appears:
      "This patch package could not be opened. Verify that the patch package exists and that you can access it, or contact the application vendor to verify that this is a valid Windows Installer patch package."

      I got the free download of 8.1.1 from the adobe site, how do I "verify that the patch package exists or if it's valid" ?
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