Firstly thanks for your reply.
When I first read your Game Frame Wi-Fi Adapter Documentation, which is clearly for existing Game Frames, it talks about the SD files download creating a new ‘Wifi’ folder.
But what it doesn’t note is that this sd_wifi.zip file doesn’t contain ALL the system files. 8^P
On a hunch, I purchased the SD Files from the shop which contains a couple more .ini files, and the webserver now runs. I thought the SD Files on the shop was only for the artwork, which I would have eventually bought after getting far enough through the build to prove that it was at least working.
It might be worth you adding a small note at step 5 on the documentation page noting you also need the core SD Files from the shop.
Anyway, I’m looking forward to moving forward with this build.