TigerXtrm wrote:
Even in the source editor there is no form of whitespace to be found.
This statement is incorrect. I had to learn this the hard way, too.
You actually have three errant line feeds in your code,
{{Mbox
|color = yellow
|image = Blind.png
|header = Image needed
|content = This article or its infobox is missing an image. Please help ''The Oddworld Wiki'' by [[Special:Upload|uploading]] it.
}}<includeonly> <== here
[[Category:Image needed]] <== here
</includeonly> <== here
<noinclude>
To use this template type <nowiki>{{image needed}}</nowiki> at the top of a page.
----
''Pages tagged with this template are automatically added to [[:Category:Image needed]].''
[[Category:Article management templates|{{PAGENAME}}]]
</noinclude>
Yes, Virginia, every one of those will appear in the output. Wikitext is funny that way. Rewrite the line that closes the infobox thusly:
}}<includeonly>[[Category:Image needed]]</includeonly><noinclude>
...and I think you will be pleased.
Remember to edit your other notice box templates in similar fashion. :-)