several problems on second site

Hi, I successfully installed UpdraftPlus on one of my sites, everything worked really well, a couple of problems on my seconds site. I have purchased the Dropbox subfolder add ons for both sites.

These are the errors for the second site:

1) In “Last backup job run” I am getting this message: “You do not appear to be authenticated with Dropbox”. I have authenticated Dropbox, UpdraftPlus appears to be writing to it and even confirms the authentication at the top of the page with the following message: “Success: you have authenticated your Dropbox account.
Your Dropbox account name: *******
Your Dropbox quota usage: 8.1 % used, 106259.3 Mb available”

2) “Last log message:” is not updating on its own, it stalls on a particular number and stays that way. My installation on the first site demonstrated that this should be like this. To see progress I am having to refresh the page.

3) I am getting multiple backups of “plugins” and “themes” (perhaps related to refreshing the page?) , not “other” or “uploads”.

All plugins have been deactivated

any help would be appreciated, I just want to feel confident that this is working as it should. Best wishes.

Here is the log: https://www.dropbox.com/s/tzfrefvwgrp5373/options-general.php

http://wordpress.org/plugins/updraftplus/