Trying to Change default Categories...Not working..??

I am simply trying to use the administration side to customize my site with my own categories and products and I can't seem to add categories, products, alter or do anything to change the products and such. If I go to Add a New Category, I will enter in the name and then select a graphic and then click save and it looks like it saves NULL info. Because the category page will come up and show a new row for the added category, but it will not display the name and it always says "IMAGE DOES NOT EXIST" next to it. When I look in the actual database itself, nothing has been added but a blank will show up in the actual site where I added the category, product, etc. I'm confused, I'm able to edit all other aspects of the site through the admin side. Can change the store configuration and such but cannot change any aspects of the categories or products. Can anybody help me?
Thanks a lot,
Nathan.

[stan]

This one's documented in the old forums, but here's the short recap: you need to enable file_uploads in your php.ini file. Just set it to On and it will fix all your problems!

-- stan c",)