I tried your method PJ, then decided to install updates as it didn't work, still doesn't lol... I tried XTU on win8.1 and it told me it required Dotnet 3.5 to function... installed it and it worked then , retrying it on Win7...
No go, after that did all possible updates besides IE10 and the darn thing still doesn't work on my Z87. v4.1.012 works perfect.... We can conclude that this thing is not linked to Windows updates
I can't seem to get the TurboV core version working on XP. Always bitches about installing the MEI drivers from the driver CD...
Already on my 3rd OS install: tried my lite, full with SP2 and another full version with SP3... all do the same...