All I can suggest is what I have before; try different things to see if that resolves your issue. For example, remove one trait you did not add (with any associated triggers and references in other files), then see if that helps you adding yours.

This would be a debugging process you'd have to go through, every modder has to go through a debugging process unfortunately. There's not always an easy or obvious fix until you try things and try to figure out why something is happening.

If all else fails, refer back to any guides you can find about traits.