I was absent for some months with some projects, and come back to find some changes. No more kitty pics for sigs? I don't know what else has changed, but also found out that an image can't be inserted into a post with just
Welcome back! TCS switched platforms back in November, and the current one doesn't support the picture signatures, though you can add albums and have thumbnails to them in your siggy. There are links to various tutorials, including how to post pictures and videos, in the FAQ you can access at the bottom of any page: