No, although the pre-existing category won't have a URI autogenerated, any products or categories added after the software is installed will have full auto-generation of URIs.
I must have done something wrong ;o(

zc 1.3.9f, Ceon SEO mod 3.8.0 on ZC certified host.

New products added to Categories/Sub-Categories that existed prior to installing this mod will only generate: /// as the automatically generated URI.

Manually created URI's that I've done so far are working perfectly for all categories and subcategories and the products in one subcategory that I've done so far.

My htaccess in root is copied from example for index in root, with admin changed to my admin name, with nothing else in that file. Other htaccess files in other folders are unaltered from zc 1.3.9f clean install.

My mod settings include Caps on each word (but I tried other settings), use of - for white space.

I added files to the exceptions list from other mods that had includes/application_top in them: /admin/sitemapxml.php, /admin/image_handler.php, /admin/products_with_attributes_stock.php, and /admin/products_with_attributes_stock_ajax.php (with admin changed to my actual file name) - but I also tried adding a new product with these exceptions removed and config saved.

My 'auto generate' box is not ticked in the categories or subcategories, but I did tick in the new products I tried.

This is an amazing mod and I am content to do things manually, but I'm nervous that I've done something wrong that may muck me up further down the road. Site is www meafordwool.com

Any idea where I should be looking?