Thread:Extension talk:SemanticAccessControl/Class 'SMWSQLStore3' not found?

php importTextFile.php Property\:ACL_Grant then: PHP Fatal error: Class 'SMWSQLStore3' not found in extensions/SemanticMediaWiki/includes/SMW_GlobalFunctions.php on line 286

ps: MediaWiki 	1.20.2 PHP 	5.4.1 (apache2handler) MySQL 	5.5.23-log Semantic MediaWiki （1.8）