Important! if you upgraded from 10.3 to 10.4 and had X11 installed, you will need to manually upgrade X11 using the 10.4 DVD, as this is not a part of the standard upgrade. Important! if you upgraded from 10.3 to 10.4 and had X11 installed, you will need to manually upgrade X11 using the 10.4 DVD, as this is not a part of the standard upgrade. AssertionError: assert($y < $this->seq[$k]) in /html/neowiki_root/includes/DifferenceEngine.php:951 Stack trace: #0 /html/neowiki_root/includes/DifferenceEngine.php(951): assert(false, 'assert($y < $th...') #1 /html/neowiki_root/includes/DifferenceEngine.php(1047): _DiffEngine->_diag(0, 2, 0, 2, 3) #2 /html/neowiki_root/includes/DifferenceEngine.php(831): _DiffEngine->_compareseq(0, 2, 0, 2) #3 /html/neowiki_root/includes/DifferenceEngine.php(1212): _DiffEngine->diff(Array, Array) #4 /html/neowiki_root/includes/DifferenceEngine.php(1371): Diff->__construct(Array, Array) #5 /html/neowiki_root/includes/DifferenceEngine.php(1639): MappedDiff->__construct(Array, Array, Array, Array) #6 /html/neowiki_root/includes/DifferenceEngine.php(1784): WordLevelDiff->__construct(Array, Array) #7 /html/neowiki_root/includes/DifferenceEngine.php(1497): TableDiffFormatter->_changed(Array, Array) #8 /html/neowiki_root/includes/DifferenceEngine.php(1449): DiffFormatter->_block(36, 5, 36, 5, Array) #9 /html/neowiki_root/includes/DifferenceEngine.php(434): DiffFormatter->format(Object(Diff)) #10 /html/neowiki_root/includes/DifferenceEngine.php(346): DifferenceEngine->generateDiffBody('{{handbook side...', '{{handbook side...') #11 /html/neowiki_root/includes/DifferenceEngine.php(302): DifferenceEngine->getDiffBody() #12 /html/neowiki_root/includes/DifferenceEngine.php(286): DifferenceEngine->getDiff('showDiff('showDiffPage(false) #15 /html/neowiki_root/includes/Wiki.php(378): Article->view() #16 /html/neowiki_root/includes/Wiki.php(48): MediaWiki->performAction(Object(OutputPage), Object(Article), Object(Title), Object(User), Object(WebRequest)) #17 /html/neowiki_root/index.php(99): MediaWiki->initialize(Object(Title), Object(OutputPage), Object(User), Object(WebRequest)) #18 {main}