You could upload from your computer which becomes an attachment to the post, or a lot of people like to put the list in a spoiler tag, following by a...
Of all places... That was tricky to figure out but I've lifted the "newbie" limitations, kinda. You can post and reply to threads made by others but...
Highly doubt it has anything to do with cached data or anything suggested aside from my post. It's something on that page I linked where it's getting...
This is a parsing error during login, so something on the page is off/not normal - specifically this page: https://www.neopets.com/settings/general/...