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Error rendering pathway page

This revision of the pathway probably contains invalid GPML code. If this happens to the most recent revision, try reverting the pathway using the pathway history displayed below or contact the site administrators (see WikiPathways:About) to resolve this problem.

Pathway history

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Compare	Revision	Action	Time	User	Comment
	73522	view	23:34, 29 January 2014	Khanspers	Modified title
	70147	view	21:31, 12 July 2013	MaintBot	updated to 2013 schema
	70146	view	21:30, 12 July 2013	MaintBot	removed problematic characters
	67505	view	11:10, 26 June 2013	Ddigles	Ontology Term : 'signaling pathway pertinent to development' added !
	40860	view	22:20, 1 March 2011	MaintBot	Removed redundant pathway information and comments
	29821	view	08:55, 3 June 2009	Gwo	Modified description
	29516	view	15:30, 11 May 2009	Gwo	Minor changes
	29515	view	15:28, 11 May 2009	Gwo	Annotation update
	29417	view	11:48, 6 May 2009	Gwo	Annotation update
	29415	view	11:40, 6 May 2009	Gwo	Update annotation
	29413	view	11:33, 6 May 2009	Gwo	Annotation update
	29412	view	11:25, 6 May 2009	Gwo	Modified categories
	29411	view	11:24, 6 May 2009	Gwo	Modified categories
	29410	view	11:21, 6 May 2009	Gwo	Modified categories
	26481	view	14:32, 3 December 2008	Gwo	Modified description
	26479	view	14:29, 3 December 2008	Gwo	Updated pathway
	26477	view	14:23, 3 December 2008	Gwo	Changed comments
	26475	view	14:19, 3 December 2008	Gwo	Extended the original pathway with more genes
	26473	view	13:41, 3 December 2008	Gwo	Modified description
	21832	view	11:32, 14 November 2008	MaintBot	[[Pathway:Danio rerio:Neural crest tutorial gwo]] moved to [[Pathway:WP548]]: Moved to stable identifier
	19083	view	10:03, 17 September 2008	Gwo	New pathway

Error details

exception 'MWException' with message 'Invalid pvjson, so cannot savePvjsonCache.' in /var/www/wikipathways/wpi/extensions/Pathways/Pathway.php:1277
Stack trace:
#0 /var/www/wikipathways/wpi/extensions/Pathways/Pathway.php(584): Pathway->savePvjsonCache()
#1 /var/www/wikipathways/wpi/extensions/Pathways/PathwayPage.php(295): Pathway->getPvjson()
#2 /var/www/wikipathways/wpi/extensions/Pathways/PathwayPage.php(169): PathwayPage->Diagram()
#3 /var/www/wikipathways/wpi/extensions/Pathways/PathwayPage.php(24): PathwayPage->render()
#4 [internal function]: renderPathwayPage(Object(Parser), '<?xml version="...', Object(StripState))
#5 /var/www/wikipathways/includes/Hooks.php(125): call_user_func_array('renderPathwayPa...', Array)
#6 /var/www/wikipathways/includes/parser/Parser.php(318): wfRunHooks('ParserBeforeStr...', Array)
#7 /var/www/wikipathways/includes/Article.php(3406): Parser->parse('<?xml version="...', Object(Title), Object(ParserOptions), true, true, 29515)
#8 /var/www/wikipathways/includes/Article.php(875): Article->outputWikiText('<?xml version="...', false)
#9 /var/www/wikipathways/includes/Wiki.php(437): Article->view()
#10 /var/www/wikipathways/includes/Wiki.php(59): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
#11 /var/www/wikipathways/index.php(93): MediaWiki->initialize(Object(Title), Object(Article), Object(OutputPage), Object(User), Object(WebRequest))
#12 {main}