WP thinks that my gallery page is a WP E-Commerce Product Category?

Question

Now I have a WP E-Commerce category page as follows:

mysite.com/products/necklaces

and I have an independant gallery page as follows:

mysite.com/necklaces

now when I go to mysite.com/necklaces, WP thinks that it is WP E-Commerce category page and I see 'Edit Product Category' button in the admin bar. but it is not!! it is totally a different page. when I change the page's slug, it works but it must be the old permalink

Any idea/solution please??