I’m out of good ideas, here are some bad ideas (grasping at straws, hopefully someone else comes in with something better if none of these work):
- The config folder should only have a few .ini files, try (backing them up) and deleting the folder completely; maybe the config you copied in somehow ignores your project’s folders, and AFAIK UE should just generate new defaults if you delete those.
- Are you sure you’re opening the correct .uproject file? If you’re starting UE through the epic launcher, try reimporting the project.
- As a last resort, you could tell us your engine version, zip the .uproject and Sources and Content folders and upload them here so I (or someone else) can take a look (probably tomorrow though, going offline soon). If you don’t accidentally include build files and your project isn’t huge or secret, it should be fairly easy.