Per Unit shipping module won't activate

[ralberts]

Hi,
I've activated the Store Pickup Shipping Module, and am trying to activate the Per Unit module as well.

However after inputting all the values, the Per Unit module is flagged as amber (i.e.. not active). However if I remove the Zone then it activates. What am I doing wrong?

Thanks so much for any help I can get!

My settings are:

Per Unit

Enable Per Weight Unit Shipping
True

Shipping Cost per Unit
1

Handling Fee
10

Handling Per Order or Per Box
Order

Tax Class
--none--

Tax Basis
Shipping

Shipping Zone
South Africa

Sort Order
10