After installing version 2.07.1 by RoadDoctor, I ran into a strange problem - when I clicked on the "Catalog" link under the Admin panel, I got a blank page. I don't understand why this happened, but I traced the problem to the order of a few changes outlined in the 2.07.1 update ReadMe file. If you are having this problem, perhaps these instructions will help you out as well.
Download attached file for revised instructions labeled 2.07.1.1_updated_README.txt
1. Changes only to catalog/admin/categories.php
2. Changed the order of p.products_ship_sep so that it is set before p.manufacturers_id
3. Added ; (semi-colon) to end of array definition. RoadDoctor's README does not have this which caused error on my server until I closed the array with ;
4. Basically, I found that I needed to leave p.manufacturers_id as the last parameter in the array. It's important to also make sure you change the tep_db_query statements or your data will be out of order.
See attached file for detailed copy. ONLY the ReadMe file is included. NOT a full package.