ADR is not made for the MAC OS, just Microsoft Windows, you would have to install a Window Emulator first. here are the system requirements:
Explore this topic if you must have an app for MAC:
Does anyone even use macdwf? Everyone that I know that have tried it complains about having to pay $9.99 for it and what a waste of money and time it was downloading it.
Be a consumer: you buy something that blows then contact the manufacturer and complain. Work up a gorup and hit their blogs and customer service lines hard. Voicing your opinions over here, whiel helpful, does nothing to change the facts of that software.
Sadly, you all will just have to wait for Autodesk to catch up with their Mac platform of products somehow, in the meantime what's out there is all you got to pick from
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