[Mediawiki-l] error whne upgrade from 1.11 to 1.12

[Patrick DUBAU]

Hi,

i want to upgrade from 1.11 to 1.12
i followed the instructions in file UPGRADE 
i used the update.php file in maintenance => no errors

browsing to my mediawiki server prompts me for my login and password => 
so far so good
after being  loged i can't go to any page : the error is : Internal 
error,  Set *$wgShowExceptionDetails = true;
*and that's the result : *
*

Parser::replaceVariables called using the old argument format

Backtrace:

#0 /var/www/test-web-info/includes/Parser.php(4526): 
Parser->replaceVariables('', Array)
#1 [internal function]: Parser->attributeStripCallback('', Array)
#2 /var/www/test-web-info/includes/Sanitizer.php(479): 
call_user_func_array(Array, Array)
#3 /var/www/test-web-info/extensions/FCKeditor.php(271): 
Sanitizer::removeHTMLtags('<p>&nbsp;</p>?<...', Array)
#4 [internal function]: wfFCKeditorBypassParserPaste(Object(Parser), '')
#5 /var/www/test-web-info/includes/Hooks.php(113): 
call_user_func_array('wfFCKeditorBypa...', Array)
#6 /var/www/test-web-info/includes/Parser.php(432): 
wfRunHooks('ParserAfterTidy', Array)
#7 /var/www/test-web-info/includes/Article.php(3174): 
Parser->parse('<p>&nbsp;</p>?<...', Object(Title), 
Object(ParserOptions), true, true, 319)
#8 /var/www/test-web-info/includes/Article.php(821): 
Article->outputWikiText('<p>&nbsp;</p>?<...')
#9 /var/www/test-web-info/includes/Wiki.php(390): Article->view()
#10 /var/www/test-web-info/includes/Wiki.php(48): 
MediaWiki->performAction(Object(OutputPage), Object(Article), 
Object(Title), Object(User), Object(WebRequest))
#11 /var/www/test-web-info/index.php(90): 
MediaWiki->initialize(Object(Title), Object(OutputPage), Object(User), 
Object(WebRequest))
#12 {main}

P.S :
i am using ldap idendificaton plugin v1.1f and FckEditor extension 0.7.2 
2006
Same error when using GUI upgrade

Does someone has an idea ?