Hi Zhen,

Are you able to share the scorm package that is causing the problem so that I can try to reproduce the issue?

Also you said it is moodle version 1.9.12, can you confirm if this is a moodle site, or a Totara site and if it's a Totara site give the Totara version (go to site admin > notificiations to find it).

Thanks,

Simon