Wikimedia Bugzilla is closed!

'My Preference' returns error message, when Gujarati is set as interface language. I have English set up as interface language on other wikis, so I can see Special:Preferences correctly there (eg. en.wiki, hi.wiki, mr.wiki, etc) but not on gu.wiki. Another user has set Gujarati on all these wikis so he can't see is preferences page on any of these wikis. When going to 'http://gu.wikipedia.org/wiki/Special:Preferences' it returns below page:

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આંતરિક ત્રુટિ (Internal Error)

Global default '1' is invalid for field math

Backtrace:

#0 /usr/local/apache/common-local/php-1.17/includes/Preferences.php(1154): Preferences::getPreferences(Object(User))
#1 /usr/local/apache/common-local/php-1.17/includes/specials/SpecialPreferences.php(70): Preferences::getFormObject(Object(User))
#2 /usr/local/apache/common-local/php-1.17/includes/SpecialPage.php(579): SpecialPreferences->execute(NULL)
#3 /usr/local/apache/common-local/php-1.17/includes/Wiki.php(250): SpecialPage::executePath(Object(Title))
#4 /usr/local/apache/common-local/php-1.17/includes/Wiki.php(63): MediaWiki->handleSpecialCases(Object(Title), Object(OutputPage), Object(WebRequest))
#5 /usr/local/apache/common-local/php-1.17/index.php(114): MediaWiki->performRequestForTitle(Object(Title), NULL, Object(OutputPage), Object(User), Object(WebRequest))
#6 /usr/local/apache/common-local/live-1.5/index.php(3): require('/usr/local/apac...')
#7 {main}
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Will appreciate if someone could fix it for us.

Thanks