OK I’ll try that way.
It works! Okay so to recap, here’s what happened: I screwed up my 4.20.3 build,
which was almost solved by following your suggestion to remove and install fresh, except for that darn .NET Framework 4.6.2 error. I found a solution for THAT, and then the re-build (went with newest version) worked! Well, it got me to the infamous 45% done loading screen anyway. I’m still waiting for it to load in debug mode hah.But I’d say that’s a win.
So I marked the answer to re-install as the Accepted one.
Here’s the ironic part, though: Once I got it to build, I tried to find the part in ShowFlags.cpp that enables or disables bloom effects in splitscreen, and couldn’t find it. That’s the entire reason I needed a source build. I searched answerHub and found out they fixed that in the VERY NEXT VERSION from 4.20.3 which is 4.21. So I actually didn’t need to go through all this rigamarole. Oh well +100 experience points, eh?
I guess they added a free plugin for sound wave and beat analysis too? That’s the other feature I needed, and I hear this one works on mobile devices too, whereas the one I’ve been using relies on a Windows-only library for the FFT.
This is the accepted answer because it was the main thing I needed to do to fix my problem. The rest of the story of how we got here (and how to fix the other problem that came up afterward) is in the rest of this post. Thanks for all your help!
turns out I needed the Developer Pack version and not the Runtime version. Oopsies. Works now!
Works! well, I right-clicked UE4 project and chose “Build” from the context menu but close enough. I still had to click the green play arrow button like you said, afterward 