Dropbox, and I'm guessing possibly others like OneDrive, and Box.net fail to get the shared url when the filename contains a parenthesis, as such:
Clipboard Image (1).png
The JSON returned is:
{"error":"Unauthorized"}
I'm guessing it has to do with the UTF8Encode SpaceEncode fiasco implemented in the last release.
Are you using the latest version as we had recently fixed this.
I hadn't seen the new update, but no, the new update does not fix the problem.
We traced & solved this issue and we'll release an update shortly.