As per your post I opened C/users/my name/documents/arduino/libraries/Rotary . I can see all the files mentioned by you in the "Rotary".
But when I opened the IDE / "sketch/import library " I can see the name "Rotary" in it but when I click it open ,it is totally empty (only the name is there).
All my efforts to install it properly is yet to succeed. I am wondering whether you can post your "Rotary" code as seen in your IDE sketch library.
Thanks again for all your efforts and time. Hope we can keep in touch in future.
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