Doesn’t seem to be an rclone issue since it works with my main gdrive remote. We have an authentication page redirect before logging in dropbox, not sure if that’s causing the error.
I’m getting the same behavior. I’ve used rclone with Dropbox for months with very similar files (dozens of them), and this is the first instance of that kind of failure. I thought perhaps the issue might be file size, but I got the same message for an empty file. I can upload the same files through the Dropbox web interface.
September 28, 2016: If you haven’t acknowledged the deprecation, new users of your app will see a warning when linking their Dropbox account.
June 28, 2017: If you haven’t acknowledged the deprecation, all users who have linked their Dropbox account to your app will receive a warning email.
September 28, 2017: API v1 endpoints are turned off.
Thanks for your patience and understanding in the transition to our new API v2. We’re continually working to improve your experience developing for the Dropbox Platform.