When you try to use the Publish Online feature after updating InDesign to 2015.3 on Mac, InDesign crashes. This happens when you have selected the Automatic Proxy Configuration protocol and either the URL is incorrect or the server is not responding.
Select Proxies and do one of the following:
- If you know the URL of the proxy configuration (.pac) file, verify the existing URL in the URL box and replace it with the correct URL.
- If you don't know the URL of the proxy configuration (.pac) file, deselect all the protocols under Select A Protocol To Configure.