I released a new version of the Delicious Blog Rescue Tool today that deals with a major bug that was introduced when the new Delicious went live.
If you already have the previous version installed, you should be able to go Tools->Add-ons and click Find Updates from the Add-ons window -- it will prompt you to install the new version. Or you can visit the website and click the Install link:
http://deliciousblogrescue.mozdev.org Please note that no user interface changes have been made to the tool yet to bring it in line with the revamped Blog Posting settings page. I plan to do that when I have a little more time on my hands and am not just scrambling to fix bugs. Please read the New Instructions listed
here. It is really important when you use the tool that you input the time correctly, in GMT, and right now it is not intuitive at all!