I just extracted fresh WIM data to folders, and unzipped a fresh copy of Win81SE. I chose the main image, and the 2 wim folders, and then went directly to the .NET component part of the script and ran the NETFX3 script. This is the error I got. (this is reproducable each time I try)
"Your selected source has not the same architecture as your selected image in 'Image Configuration'!"
Which makes absolutely no sense, because the extract boot and install folders came from the same ISO that is selected in step 1 "Source".
I am using x64 8.1 w/ update 1 media.