Seen today in various variants ( http://pastebin.com/S3G5EmPg ) on dewiki, maybe related to "Problems with db27 server, Large replag on S3, writes may not be visible directly" http://wikitech.wikimedia.org/index.php?title=Server_admin_log&action=historysubmit&diff=30992&oldid=30989
PPFrame_DOM::expand: Invalid parameter type
Backtrace:
0 /usr/local/apache/common-local/wmf-deployment/includes/parser/Parser.php(2733): PPFrame_DOM->expand(Object(PPNode_DOM), 0)
1 /usr/local/apache/common-local/wmf-deployment/includes/parser/Parser.php(935): Parser->replaceVariables(''Gr??nheide...')
2 /usr/local/apache/common-local/wmf-deployment/includes/parser/Parser.php(335): Parser->internalParse(''Gr??nheide...')
3 [internal function]: Parser->parse(''Gr??nheide...', Object(Title), Object(ParserOptions), true, true, 82118939)
4 /usr/local/apache/common-local/wmf-deployment/includes/StubObject.php(58): call_user_func_array(Array, Array)
5 /usr/local/apache/common-local/wmf-deployment/includes/StubObject.php(76): StubObject->_call('parse', Array)
6 [internal function]: StubObject->__call('parse', Array)
7 /usr/local/apache/common-local/wmf-deployment/extensions/FlaggedRevs/FlaggedRevs.class.php(499): StubObject->parse(''Gr??nheide...', Object(Title), Object(ParserOptions), true, true, 82118939)
8 /usr/local/apache/common-local/wmf-deployment/extensions/FlaggedRevs/FlaggedArticleView.php(633): FlaggedRevs::parseStableText(Object(Title), ''Gr??nheide...', 82118939, Object(ParserOptions))
9 /usr/local/apache/common-local/wmf-deployment/extensions/FlaggedRevs/FlaggedArticleView.php(297): FlaggedArticleView->showStableVersion(Object(FlaggedRevision), , NULL)
10 /usr/local/apache/common-local/wmf-deployment/extensions/FlaggedRevs/FlaggedRevs.hooks.php(1466): FlaggedArticleView->setPageContent(false, true)
11 [internal function]: FlaggedRevsHooks::onArticleViewHeader(Object(Article), false, true)
12 /usr/local/apache/common-local/wmf-deployment/includes/Hooks.php(133): call_user_func_array(Array, Array)
13 /usr/local/apache/common-local/wmf-deployment/includes/Article.php(817): wfRunHooks('ArticleViewHead...', Array)
14 /usr/local/apache/common-local/wmf-deployment/includes/Wiki.php(493): Article->view()
15 /usr/local/apache/common-local/wmf-deployment/includes/Wiki.php(70): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest))
16 /usr/local/apache/common-local/wmf-deployment/index.php(117): MediaWiki->performRequestForTitle(Object(Title), Object(Article), Object(OutputPage), Object(User), Object(WebRequest))
17 /usr/local/apache/common-local/live-1.5/index.php(3): require('/usr/local/apac...')
18 {main}Version: unspecified
Severity: blocker
