Download Muse CC 2017 from your creative cloud manager and install it as a trial.
Download the amtlib.framework:
And unzip it if needed.
(Newer versions of Mac will unzip automatically).
Then copy the amtlib.framework file and paste it into:
Applications >> Adobe Muse CC (2017) >> Adobe Muse CC (2017) (Right click) >> Show Package Content >> Contents >> Frameworks
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