This is an archived bug report. If you are experiencing a similar issue, upgrade to the latest release and if that does not solve the problem, submit a new bug report
Please read this thread first for some background info:
http://ellislab.com/forums/viewthread/137126/
Here are the steps to reproduce:
1. Create a channel
2. Go to Publish page of that channel, close the URL TITLE with the Eye Icon, and save the layout.
3. Reload the same Publish page, and open URL TITLE with the Eye Icon, and save the layout again.
4. Now go to that channel’s preferences in Channel Administration, under “Publish Page Customization†set Display URL TITLE to “NOâ€, and click save.
5. Now go to that channels publish page and enjoy a php error (At least i get it).
This also happens on some occasions when setting preferences of, for example the Ping tab, which has been customized via the publish page toolbar before, without “remove layout” before editing channel preferences with “Publish Page Customization”.
ExpressionEngine implements Markdown Extra and BBCode. Please see the Markdown Extra docs and the BBCode Wikipedia article for a full reference.
**bold**, __bold__, *italics*, _italics_, ~strike/del~, `code()`
bold, italics, strike/del, code()
Link: [link title](https://example.com)
Image: 
[blockquote]...[/blockquote], [quote]...[/quote], and Markdown style:
> Some quoted text. > > This is all one quote.
[code]...[/code], and you can also specify the language for syntax highlighting, [code=php]...[/code]
GitHub flavored Markdown code fences are also supported:
```
public function decoderRing($str)
{
return str_rot13($str);
}
```