Hi Entropikz,
Can you try the following things and see if you’re still getting the error:
- In the Epic Games Launcher under the Library tab where your Engine tabs are. Can you click the down arrow next to the Launch button and select “Verify”. This can potentially fix any issue with the engine that may cause this.
- If that doesn’t work, can you open Swarm Agent after trying to build lighting for your level. You can find it’s icon in the task tray next to the clock in your Windows Task bar. It’s the Yellow/Orange SA icon. Once opened click the Cache menu button. then click Clean and then Click Validate.
- If that doesn’t work, Try creating a new default level. Do not place anything int he level other than what is already there. Click Build to build the lighting. If that works, add one of the meshes you mention in your post and see if that can build lighting. If that causes the failure we can try and narrow down what may be going on with the asset.
Thank you!
Tim