Lighting rebuilt issue

[Jazzusa]

Hello, I’m a total beginner trying to follow a tutorial. Tried to add rectangular lights to a scene but keep getting the message that lights need to be rebuilt. Rebuilt it several times, restarting UE5, but no solution:

I’m on a Macbook Pro M2 Sonoma 14.5.

Any ideas?

Many thanks!

[ClockworkOcean]

When you drag the lights in, just set them to ‘moveable’ ( in the details ), they are static by default, which needs building…