Instead of neat error message ([[MediaWiki:Imagenocrossnamespace]]) seen at wikis with local file repos, I see “Internal Error” and this:

"RepoGroup::findFile recieved an Title object with incorrect namespace"
Backtrace:
#0 /usr/local/apache/common-local/php-1.17/includes/GlobalFunctions.php(3309): RepoGroup->findFile(Object(Title), Array)
#1 /usr/local/apache/common-local/php-1.17/includes/Title.php(3041): wfFindFile(Object(Title))
#2 /usr/local/apache/common-local/php-1.17/includes/Title.php(3102): Title->isValidMoveOperation(Object(Title), true, '')
#3 /usr/local/apache/common-local/php-1.17/includes/specials/SpecialMovepage.php(399): Title->moveTo(Object(Title), true, '', true)
#4 /usr/local/apache/common-local/php-1.17/includes/specials/SpecialMovepage.php(90): MovePageForm->doSubmit()
#5 /usr/local/apache/common-local/php-1.17/includes/SpecialPage.php(578): MovePageForm->execute(NULL)
#6 /usr/local/apache/common-local/php-1.17/includes/Wiki.php(252): SpecialPage::executePath(Object(Title))
#7 /usr/local/apache/common-local/php-1.17/includes/Wiki.php(63): MediaWiki->handleSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#8 /usr/local/apache/common-local/php-1.17/index.php(114): MediaWiki->performRequestForTitle(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#9 /usr/local/apache/common-local/live-1.5/index.php(3): require('/usr/local/apac...')
#10 {main}

Version: unspecified
Severity: minor