The error I was experiencing with my Unreal Engine 4.10 installation, which was supposed to update from 4.10.0, has resolved, more or less. It never worked as an update. I tried uninstalling my Visual Studio 2015 redistributables, rebooting, and updating Unreal Engine, and it failed. I then removed every single Visual Studio item from my system, rebooted and tried to update Unreal Engine, and it failed. I de-installed UE 4.10.0 completely, and got a much larger install download – 4.4 GB or so instead of 2.3 – and that ultimately failed.
Finally I did two things together, and I don’t know if either, both, or neither is what led to success. I installed the complete Community version of Visual Studio 2015, (45 GB or so) including all the options so whatever missing tool set might come with it, and rebooted a few times for that. And I also discovered that my desktop shortcut for the Epic launcher for Unreal Engine, which manages the update installs, had reverted to not launching with administrative rights, so I checked that box again. After one more reboot, just because, I told the 4.10.1 install to resume, and in a couple minutes, *poof* there it was. My project files appear to open just fine, and I can resume work on my wheelchair sim project, Ayuma Project 1, and start prototyping another idea I have. For those of you that come to this post because you are having similar errors with you Unreal Engine 4.10 installation displaying E-1223 or otherwise missing prerequisites, here is what that whole section of my installed programs list looks like with it now successfully installed and working.
Speaking of which, the most popular click item on this blog is the wheelchair dimension diagram in my initial post about Ayuma (which could be an acronym for As Yet Unnamed Mobility & Accessiblity) Project. I didn’t make that image and I could never find back where I got it from, so I am glad that others are finding it there also. More people wanting to understand the dimension requirements for wheelchair accessibility is probably a good sign. Maybe it even means more people are making VR wheelchair-oriented sims, which might be good news (I do have some reservations about it, and not just because I hope people will want to spend a little time with this one). Here I will repost the wheelchair dimension image, to help it get seen by a few more eyes. I would credit it if I could trace back where it came from; I suspect it was a government site. Let me just say it is not mine. As always, thank you for your time coming to read this blog 🙂