>>It does not replace an existing image. I already tried that (and I just tried again). That's why I posted a second image last time. Then, somehow, the wrong one got deleted, so the bad one is still up there, and I cannot replace it.
>
>Ok, I removed it. So you should be able to upload it.

Done! Thanks.

(P.S. - Now I'm wondering if I only had a caching problem on my end with my browser still showing me the old image, even though I had uploaded a new one to UT. Ooops. Well, it's all good now. Thanks to you. I will test out this uploading a new image stuff in a separate sandbox test message so I can understand it better for next time.)