First issue is a "Duplicate Formula" being thrown whenever g8f base or any g8f character is loaded. Second issue is that the rigging for the character does not align with the shape causing all of her joints to break when posed.
I did some investigating into these issues and I believe that "SC Natasha" by Guhzcoituz is conflicting with another character known as "SC Natasha" by the vendor Second Circle. You can view this character over at renderosity. Removing the data for Second Circles "SC Natasha", fixed the Duplicate Formula error and the character rigging issue.
Could you please have the vendor fix the conflict with his character?
Thanks.

Hi! I notify vendor he will correct problems.

Hi! Updated please re-download zip

Thanks again wartech.