I have the Gothique Fullset.
Uploading now.

Here

Compressorised in case anyone isn't using the latest patch.

The only thing I've ever seen that causes issues like that is a t-shirt with a vampire or something on the front, that has a screwy mesh. Shows up in the launcher named .nkd I believe. I don't know if that could be the cause of this particular problem or not.

I had this happen to one of my households as well. The sim in question completed his LTW in the rock star branch. His wife, brother and sister in-law and best friend were residing in the house at the time and they too would run to look at him first before performing any action I had queued for them.

Even if he was swimming in the pool, they would run to the edge, change into swimwear and dive into the pool, treading water and looking at him for a moment, and then get out and go off and peform whatever I had instructed them to do.

I found it all rather strange, so I reset the lot, and haven't noticed it happening again. Also, when he achieved his LTW, it did not plate over like it usually does. The Rock Star icon disappeared and he is left with a blank square where his LTW should be, like a child has, before they're assigned  one as a teen.