I just installed Adobe Reader on my Macbook Air (followed all steps given) and .pdf files still cannot be displayed after I double click on them.
If by that you mean Preview is still opening the files Control Click and HOLD on a .pdf file you'll see Open With (at the bottom) Other Dialogue box. - mouse over to it and before you choose Acrobat click Always Open With in the checkbox.
Thank you! I had to look up how to right-click without a mouse, and learned all about that too. Now I can look at any .pdf file using Acrobat.
YW glad to have been helpful.
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