editing product variants in localhost - having problems

Hi,

I am adding categories and a products to a localhost store in 2.4 but when I click to edit a products variant I get a System.NullReferenceException. I've attached a screen print. Is this normal? Am I doing something wrong? Do I need to change something?

http://tinypic.com/r/34te6xe/5

Thank you

Well now I have actually read the error properly it looks as though its something to do with me not adding the dimensions of the variant? Do I really have to make sure this is not left as 0.00 in the dimensions on every product variant then?

Oh I sorted it.

Comes down to me not setting a primary dimension in Configuration > Measures > Dimensions.

I'm so stupid sometimes!