Win 10 and WtGU 2.8

[Highlander]

Hi

Problem with WtGU 2.8 -

host PC:
a) Windows 10 Pro 64b ver. 1903 on ssd with a lot of RAM, AMD-v supported and enabled
b) WtGU 2.8
c) Oracle VM Virtualbox 5.2.22
d) latest Win 10 iso

error:
WtGU starts creating a VM but stops at 5% with error "Failed to run system API.(0X0002001502990000)", both on "Check"-button and "Upgrade"-button.

I tested it on Win 10 Pro ver. 1709 tool - same result with the same error message - it was before i upgraded Win to ver. 1903