Slitherine

This has nothing to do with empires but since I only read this forum I'll post it here.

When you upload attachments you can choose both pngs and jpgs. But pngs do not work, only jpgs (and maybe other formats which I haven't tried).
Pngs will just not show up without an error message. Jpgs get a 'put inline' button and show up when you press it.

This is quite confusing and from the posts scattered though the forum I'm not the only one who fell for it.