Variatons don't work.

Ok please please please help.

So I’m trying to add tshirts to my website and I need to add the size variation to the product. When I click on the update variations on the product page it will act like it’s going to load but then nothing happens. I can’t add the variations values to the product. This is driving me insane and I haven’t been able to find any topics with an answer. has anyone else had this problem and please help me fix it.

I’m getting tired of all these issues with wp e-commerce. if its not one thing its another. If anyone knows of another simple to use ecommerce plug please let me know becuase this is my last straw.