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Go back to Tools -> Update Center and select Check the Web .... Deselect Development Update Center and make sure that Mevenide Update Center is selected.
Click Next.
Under Available Updates and New Modules, you should see a number of modules under Mevenide Update Center. Click the Double Arrow to put these all into Include in Install. Now use the Single Arrow to deselect the installation of Mevenide-Grammar, as you installed this previously.
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