Well, we're two months into the most recent issue of not uploading to Dropbox going unresolved. There have been no replies from the plug author here in longer than that and no posts on the plugin webpage in more than six months. I've been backing up my weblog manually, but want an automated solution back up and running.
So I'm moving on to something else. I hope the issues do get fixed and that others are able to use the plugin well. Thanks to Paul Getty for a plugin that was great while it lasted.