I upgraded my project to v4.18. Installed the required visual studio and sdk 8.1. Every thing seems to work fine until i build my lighting. I get the error " failed to kick off swarm. Compile unreal lightmass". Went through every resource online, tried all available fixes. There is no .sln file in my folder structure. Is there a way to compile unreal lightmass in blueprint? Please do not redirect to a previous solution. I have tried them all. deleting data cache ect…
To fix this I created a new level (default). Then I dropped in a static mesh and built lighting. Then I went back to my original level and selected all my assets in the world out liner and pressed delete. When the prompt came up I selected no to all. Then I let the lighting build start. Once it started I quit the editor without saving. Then I re opened the editor and level and the lighting build worked.
This solution doesn’t make any sense. What happens to the lighting build after selecting no to all? Cuz my lighting build failed there, then I quit the editor without saving, re-opened the editor and the level and the lighting build still failed.