When we add a scorm there is a javascript error on that page. this error is on Packege File element of page. Because element name is reference[value] while when validation function called to validate it it calls it with the name form.elements['reference']. Due to this javascript error comes when we submit the form.

DETAIL:
function validate_mod_scorm_mod_form(frm)

in this function there is call to function validate_mod_scorm_mod_form_reference(frm.elements['reference'])

in this call frm.elements['reference'] is passes as argument while the element name is reference[value]