Serious: Launcher opens, cannot open project files

Getting really tired of waiting for an answer. I can literally do nothing project related with any degree of reliability. Even if I were able to sneak in some work uploading it to source control to have the rest of our team inherit this ■■■■ is something I can’t afford happening. While I can’t expect anyone not affiliated with Epic to know, I would think that someone from Epic would look at their forum to throw a lifeline with stuff like this.

I’m at the point where I’m seriously weighing the level of frustration over this against the years, money and time, I’ve invested in this project.

Additional: I tried migrating the project to 4.26 (copy). It run without failure once and not since.

WTF!!!