If that doesn’t fix the problem, please create a brand new blank project in Mac Scrivener. Type a few lines, transfer it to iOS Scrivener, type a few lines there, and transfer it back. If it crashes, email it to mac.support@literatureandlatte.com with my name in the subject line and a link to this thread in the body of the email.
For the record, I tried creating projects on both platforms. What stood out is when I created in S+iOS, it opened on Mac, and opened again in S+iOS–the crash is consistently happening once I edit a file in S+iOS and go to re-open on Mac, regardless of which platform the project was created on.
Dave, I am on OX 10.8.5, which I think is Mountain Lion, not Sierra.
For anyone following this thread, we have traced the problem to an issue with iOS conflict resolution related to a bug in OS X 10.8.
If you are having similar symptoms and ARE NOT using OS X 10.8, please start a new thread. Your issue may be completely unrelated.
If you ARE using OS X 10.8, please contact our support address, at mac.support@literatureandlatte.com. We are testing a fix, but aren’t ready to release it to the world yet.