Thanks for getting back so quickly.
I already have High Sierra up and running. But because the Nvidia drivers are unsupported, I figured to install Sierra on a separate partition in order to continue working. I have to be able to use the Graphics card as I do video and 2D animation.
Regarding the Kext Utility. I do not have Sierra installed yet. I'm struggling to get to the boot window. So now, if I run Kext utility, it will be installing on a different system. Does that make more sense?
I'm trying to install the kexts into the USB S/L/E directory. But then, is that even necessary?
Here is the error code I'm getting, which I'm trying to solve with the fakePCIID kext.
View attachment 275984
THanks for your help KPG, you've been very helpful on High Sierra, really hoping you can help me get Sierra going as well.