I had an inspiration last night.
Version 1.5 is now available . This adds Mixed Heritage as a species (separated at the top of the list) and allows for the proper selection of attributes based on species.
When Mixed Heritage is chosen as the species there will be a selection in the middle of the species tab where you select the appropriate species. However, before any attribute selection takes place, the button labeled "Add Traits" must be clicked. This will add the appropriate traits to the character and populate/make visible the attribute selections.
I'm also opening this up for anyone who wants to give it a whirl.
Add "https://www.dropbox.com/s/qnhleith4exfa1o/updates.xml?dl=1" to your update sources and this should allow you to fully use STA if you have the Authoring Kit/Savage Worlds data as part of your license.
Please! Please! Let me know your thoughts on this.
Thanks!
Thomas