I’ve been struggling for months with the structure in a structure error that was potentially resolved with 4.19.
Project files that were already broken or susceptible of breaking due to the structure error can be imported and saved in 4.19. BUT, the blueprints won’t finish compiling. I get a message saying the compile was successful with no errors, but the blueprint compile icon still appears to need compiled ( no green check ).
When trying to launch the game, i’ll get a message saying “unresolved compiler errors” in the blueprint that just compiled successfully (except the icon). Game will play no issues other than that.
Edit: This is happening in preview 4 and 5 - I haven’t tested it in earlier preview versions.