I contribute a lot to College Gymnastics Wiki. We're trying to put several pictures of the same gymnast under little tabs in their infoboxes. I tried it on two different pages but I keep seeing these [[ brackets on top of it and "|250px]]" on the bottom.
This is what the source code looks like for both infoboxes.
So I don't know where these [[ brackets and "|250px]]" are coming from.