Regarding the SCORM Compliancy checking

I have use ADL scorm test 2004 4th edition to test on the courseware created by articulate. But I have the error below. Can I know why I'm getting this error?

Advanced Distributed Learning (ADL)

Sharable Content Object Reference Model (SCORM) 2004 4th Edition

Test Suite Version 1.1.1

Test Environment Information:

Operating System: Windows 7 - SP 1

Java Run-Time Environment: 1.6.0_30

Web Browser: Internet Explorer 8.06

Test Subject Information:

Date: Monday, 19 March, 2012 10:47:47 AM

Content Package Product: r

Content Package Version: r

Content Package Vendor/Developer: r

Content Package Test Conformance Summary

Testing against the SCORM Content Aggregation Content Package Application Profile

The XML is Well-formed

The IMS Manifest does not include a reference into a (sub)manifest

ERROR:Controlling Document(s) Required For XML Parsing not Found at Root of the Content Package

The IMS Manifest does not contain extensions

ERROR:Testing has been terminated

Click here to view detailed CP test log

SCORM 2004 4th Edition Conformance Statement:

ERROR:The Content Package is Non-Conformant

ERROR:The Content Package is CP CAM 1.1 Non-Conformant

Successful outcome of this test does not constitute ADL Certification unless an ADL Certification Auditor conducted the test.