Since updating to WordPress 3.0, every time I create a new post, I get an error messaging saying Page Not Found but the post is created successfully and appears in the right hand side of the screen under the recent posts. From what I can see in the forums, most people who get this message don’t get the post generated either. For me the error message shows up but the page has been created successfully.
This post will be updated as I work through the solutions – Troubleshooting consists of disabling plugins and then re-enabling them one at a time – a very time consuming process.
Typical – now I can’t reproduce the error! Seeing as though the page does actually exist I think I’m just going to not worry about it 😉