Until there isn't a firmware/kernel update in the Raspbian Foundation repo, it can be workarounded with this:
https://retropie.org.uk/forum/topic/19328/testing-kodi-18-0-leia-beta-versions-now-available-for-retropie/123

Ok, it looks like everything is working normally now that I put a Ethternet cable in the machine, and it was able to install everything. Looks like I need the Ethernet cable to do stuff.

@buzz thank you so much...... this has worked...... will just a normal download and install work now as I’ve a couple of PCs to do for the kids bedrooms...

Thanks so much

@geekomaniac Looks like an upstream bug. I suppose you don't have a x86_64 cross-compiler installed ?

@mitu

Thank you all for the help!!

ROM's are on my system, and it works perfect!

Next, I'll just need to hook the raspberry pie up via Ethernet cable to make sure it's updated.

@ceruleansoul Here's how I successfully installed Retropie:

Made sure I have a formatted SD card to FAT32. Follow the download instruction and installation for P2/P3 from this site:
https://retropie.org.uk/docs/First-Installation/ That's all there is to it....