Same exact problem, i.e. Ableton 10 crashing on launch with Apple's "program unexpectedly quit" message..
I actually went ahead upgrading from Standard to Suite, thinking a new install might get rid off any corrupt files.. no joy!
Tried cloning back files from a recent backup.. (noticing that from the backup Ableton launched fine, and after deleting the Suite).. it worked all day yesterday.. then after MacOS was brought out of sleep-mode this morning, started Ableton - same issue again!
Next thing to try (prior to writing support), might be to re-install an older Live version..
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