[Mediawiki-l] "Invalid h node passed to PPNode_DOM::splitHeading" error on 1.12

[Simon Renshaw]

Hi,

I'm using version 1.12 and we get the following error when trying to
edit a section of a page:

Invalid h node passed to PPNode_DOM::splitHeading

Backtrace:

#0 C:\Wiki\mediawiki\includes\Parser.php(4605): PPNode_DOM->splitHeading()
#1 C:\Wiki\mediawiki\includes\Parser.php(4675):
Parser->extractSections('=Intro=?VMF is ...', '1', 'get', false)
#2 C:\Wiki\mediawiki\includes\EditPage.php(193):
Parser->getSection('=Intro=?VMF is ...', '1', false)
#3 C:\Wiki\mediawiki\includes\EditPage.php(982): EditPage->getContent(false)
#4 C:\Wiki\mediawiki\includes\EditPage.php(473): EditPage->initialiseForm()
#5 C:\Wiki\mediawiki\includes\EditPage.php(323): EditPage->edit()
#6 C:\Wiki\mediawiki\includes\Wiki.php(444): EditPage->submit()
#7 C:\Wiki\mediawiki\includes\Wiki.php(48):
MediaWiki->performAction(Object(OutputPage), Object(Article),
Object(Title), Object(User), Object(WebRequest))
#8 C:\Wiki\mediawiki\index.php(90):
MediaWiki->initialize(Object(Title), Object(OutputPage), Object(User),
Object(WebRequest))
#9 {main}


But it works fine if we try to edit a page using the edit link at the
very top of the page.

Any idea what is wrong?

Thanks!
Simon