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October 20, 2020


After installing ChemDraw 19.x for Mac, I am not always able to open ChemDraw and receive a warning message that ChemDraw quit unexpectedly. How do I fix the problem?


Assuming you are not able to open ChemDraw application (from the Application folder); if so, please check your Proxies setting (System Preferences > Network and then click the Advanced button).

If you have “SOCKS Proxy” selected and your SOCKS Proxy Server points Localhost Port No 8080 then uncheck “SOCKS Proxy” then click OK and then click the “Apply” button.

Then try to open ChemDraw from the Macintosh HD\Application folder

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