As a MacBook Pro OSX 10.7.5 user, and purchaser of Amadeus Pro (since 2013) I just now made the mistake of attempting the update for the new version, which is NOT compatible with 10.7.5 and wipes out your existing version. After re-downloading the older version, it asks for the Licence Key, which I had on my original version that was deleted by the new version, and which I can't find!!
I really need to use Amadeus Pro TODAY to complete a project and sent an email to Martin, with a copy of my original iTunes receipt, but haven't heard back.
HEEEEEEEEELLLLPPPPP!!!!!!!!
Many thanks in advance

~ Mark