Article URL has smarty in it.
When viewing an article you get smarty code in the url before the "articles" For example, http://www.mysite.com/IA_URL_LANGarticles/article/food/desserts/1-Test-Recipe.html
Around Line # 91 the IA_URL_LANG appears in the URL of the article
$url = $iaView->domainUrl . IA_URL_LANG . ($extras['url'] != '/' ? $extras['url'] : '') . ($isCompactUrlMode ? '' : 'article/') . $categoryUrl .
I removed IA_URL_LANG and it works properly. like this.
$url = $iaView->domainUrl . ($extras['url'] != '/' ? $extras['url'] : '') . ($isCompactUrlMode ? '' : 'article/') . $categoryUrl .