Missing or Invalid SKU Error

I have seen the German post on this subject, but his resolution was to reinstall. I have reinstalled, but I still get the error when I try to install the official patch Patch_NA_Europe_Germany_MP_2.0_(1.0.86.4580) linked from the London 2038 page.

I had this running on a previous Win 10 machine, but unfortunately it was my only machine and the USB horked.

Does anyone have any workarounds for this issue?

Best regards,
Gazehund