This happens to me to when converting the project from 4.51 binary to 4.75 release source (guess it would be the same for converting to 4.75 binary, but didnt tried it yet). Renaming the folder makes some of the “external referencing” errors go away. But some (for a bp for example) are still there.
Even more now, when I renamed a folder from for example boids to boidss, the folder called boids is still there but empty. Don’t know if that helps by finding a solution for this problem.
Edit: I just saw that even the boids folder which shouldn’t exists anymore, is empty in the editor but when i check in windows explorer it still has files in it. And when I want to delete the folder in the editor it gives me warning about those files beeing deleted. Edit: This thing is happening on Windows.
On occassion I could send you some part of my project related to this error maybe. Would you more need the 4.51 version or the converted one?
Also other problems for converting my project happend in 4.7 preview and are still happening like that I have to include Media Player in proguard.txt file make my project launch in distribution build on android withouth crash:
So far this is not such a big problem, but might be later on when video playback will be available in game on Android. I know that Android priority is not nr.1 on epic list, but maybe still worth a ticket as I am apparently not the only one with this conversion problem.