Well it's still a PERMISSION DENIED error on all or most of that.

So the account you're using to edit them still does not appear to have permissions.

Review all the FOLDER and FILE permissions with an FTP client (if you can) and change per the Installation instructions for UBBT7

Then logout of the site on your web brower, delete cookies if needed, then log back in and try again.

I would use FireFox 2.x and not IE6 or IE7 as there are some known caching issues if setting on IE are not set correctly.