Error while setting up Dropbox sync

[boo]

Attempting to 'Set up Sync' with Dropbox opens my browser to a Dropbox page with the following information (see attached screenshot):

 

Error (400)
It seems the app you were using submitted a bad request. If you would like to report this error to the app's developer, include the information below.


More details for developers

Missing client_id.

 

I am using version 6.7.4 (933) on Arch Linux.