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XF 1.5 XenForo_ViewAdmin_Helper_Option error during installation

#1
During installation, this error occur while I'm trying to setup administrator.

Fatal error: Class 'XenForo_ViewAdmin_Helper_Option' not found in /home/htweet1/public_html/library/XenForo/Install/View/Install/Step4.php on line 13

Please any known fix?