A migration script for importing Nucleus authors, categories, items, comments (and optionally trackbacks and blogroll links) into a fresh WordPress install.
This is the only Nucleus-to-Wordpress Importer that worked for me. If you are using a newer version of WordPress, you have to delete some lines in index.php and classes.php5 to make it work. index.php: lines 331-346 (begins with "// Okay, now that's done" and ends with "flush();") and lines 367-377 (begins with "// Update post counts" and ends with "flush();") classes.php5: lines 277-279 (begins with "// Insert post2cat" and ends with "$database->query($query);") If you delete these lines, the categories are not created and all items are assigned to the standard category. But if you do not delete these lines, you can't import anything... So, it's not a perfect solution, but you will have all items and comments. That's a good compromise, I think. :-)