The partnership between Bornemark and Steinberg has dissolved long ago.
Steinberg are no longer in charge of the code. Groove Agent 1/2/3 or the Virtual Guitarist instrument (a real shame - another great VSTi by all accounts) have nothing to do with Steinberg anymore.
Write to Sven at Bornemark and see if you can get any answers there…
http://bornemark.se/