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2018 TT will not run on OS 10.10
https://ttlc.intuit.com/questions/1899173-minimum-system-requirements-for-turbotax-mac-software
2018 TT will not run on OS 10.10
https://ttlc.intuit.com/questions/1899173-minimum-system-requirements-for-turbotax-mac-software
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https://ttlc.intuit.com/replies/3300041
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