Wikimedia Bugzilla is closed!

When querying the MediaWiki API for information on certain redirect pages, MediaWiki returns a error code rather than the information requested.  Pages known to have problems are "Prince (artist)" and "Main page".

Steps to reproduce:

1) Visit the URL http://en.wikipedia.org/w/api.php?action=query&redirects=1&titles=Prince%20(artist)

Expected result:

<?xml version="1.0" encoding="utf-8"?>
<api>
  <query>
    <redirects>
      <r from="Prince (artist)" to="Prince (musician)" />
    </redirects>
    <pages>
      <page pageid="57317" ns="0" title="Prince (musician)" />
    </pages>
  </query>
</api>

Actual result:

<?xml version="1.0" encoding="utf-8"?>
<api>
  <error code="internal_api_error_MWException" info="Exception Caught: Internal error in ApiPageSet::getRedirectTargets: Invalid redirect IDs were found">

#0 /usr/local/apache/common-local/php-1.5/includes/api/ApiBase.php(659): wfDebugDieBacktrace('Internal error ...')
#1 /usr/local/apache/common-local/php-1.5/includes/api/ApiPageSet.php(540): ApiBase::dieDebug('ApiPageSet::get...', 'Invalid redirec...')
#2 /usr/local/apache/common-local/php-1.5/includes/api/ApiPageSet.php(494): ApiPageSet->getRedirectTargets()
#3 /usr/local/apache/common-local/php-1.5/includes/api/ApiPageSet.php(365): ApiPageSet->resolvePendingRedirects()
#4 /usr/local/apache/common-local/php-1.5/includes/api/ApiPageSet.php(250): ApiPageSet->initFromTitles(Array)
#5 /usr/local/apache/common-local/php-1.5/includes/api/ApiQuery.php(197): ApiPageSet->execute()
#6 /usr/local/apache/common-local/php-1.5/includes/api/ApiMain.php(354): ApiQuery->execute()
#7 /usr/local/apache/common-local/php-1.5/includes/api/ApiMain.php(222): ApiMain->executeAction()
#8 /usr/local/apache/common-local/php-1.5/includes/api/ApiMain.php(207): ApiMain->executeActionWithErrorHandling()
#9 /usr/local/apache/common-local/php-1.5/api.php(77): ApiMain->execute()
#10 /usr/local/apache/common-local/live-1.5/api.php(3): require('/usr/local/apac...')
#11 {main}

</error>
</api>