I'm in the process of creating the topic for my map here, and now when I try to preview it I get this message. I will go ahead and say the post is rather long so far, probably the longest I've ever seen on here, so I don't know if that has anything to do with it or not. I've also previewed it a good bit so far, so could that be a problem? Any ideas to what this phenomenon is?
Try copy-pasting it to a text editor, close your browser, and paste it in a new thread. It could be too long, I guess. Look at Cave Freaks in my sig (not for the map, for the post length), if it's longer than that, that could be it.
The longest post I've ever seen is Time Glitch and Y4ZT's I Am Legend Revisited. (http://www.forgehub.com/forum/casual-maps/23136-i-am-legend-revisited-new-map.html). If your post is longer than that I will be very suprised.
Is it possible that there is a posting character limit that you have passed? I havn't heard of any but it's a possibility. I also get this same message when trying to do a few things. It could just be a glitch. Programming is never perfect.
No its when you get on the site and post using the quick post first without replying to another thread first don't ask me why it does it but it does try replying to a post first using the advanced poster helps too.