I have an XML with 8 lessons. When it's uploaded to the web. Lesson 02 is imbedded into Lesson 03. Why is this happening when each lesson is contained in it's own block and it validates okay.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE course SYSTEM "C:\DTD\sco_csf(5).dtd" >
<course>
<globalProperties>
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service.xml</location>
</externalMetadata>
<curricularTaxonomy>
<model>ADL LMS Course</model>
</curricularTaxonomy>
</globalProperties>
<block id="B0">
<!--B00-->
<!--B000-->
<!--B100-->
<!--B200-->
<!--B300-->
<!--B400-->
<!--B500-->
<!--B600-->
<!--B700-->
<!--B800-->
<identification>
<title>Food Service Sanitation Training Refresher Course</title>
<description>This course has eight lessons that provide an overview of Food Service
Sanitation</description>
<labels>
<curricular>COURSE</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<block id="B00">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Pretest/pretest.xml</location>
</externalMetadata>
<!--<objectiveRef targetIDs="O1"/>-->
<identification>
<title>Course Pretest</title>
<description>This AU serves as a pretest to the course</description>
<labels>
<curricular>au</curricular>
<developer>Tesco, Inc</developer>
</labels>
</identification>
<au id="au0">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Pretest/pretest.xml</location>
</externalMetadata>
<identification>
<title>Course Pretest</title>
<description>This AU is the pretest for the entire course</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Pretest/pretest.html</location>
</launch>
</au>
</block>
<block id="B000">
<!--<objectiveRef targetIDs="O2"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Intro/au00.xml</location>
</externalMetadata>
<identification>
<title>Introduction</title>
<description>This AU serves as a title page, citing references and listing the lesson
objectives</description>
<labels>
<curricular>au</curricular>
<developer>Tesco, Inc</developer>
</labels>
</identification>
<au id="au00">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Intro/au00.xml</location>
</externalMetadata>
<identification>
<title>Course Introduction</title>
<description>This AU introduces the course</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Intro/AU00.html</location>
</launch>
</au>
</block>
<!-- Lesson 01: Health Requirements, Personal Hygiene and Inspections; Authorware format -->
<block id ="B100">
<!--<objectiveRef targetIDs="O3"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/Lesson01.xml</location>
</externalMetadata>
<identification>
<title>Personal Hygiene and Environmental Health</title>
<description>This lesson covers personal hygiene, health requirements and
inspections</description>
<labels>
<curricular>Lesson</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<!--AU01: Health Requirements -->
<au id = "AU01">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/AU01/au01.xml</location>
</externalMetadata>
<identification>
<title>Health Requiremnts</title>
<description>This AU covers health requirements</description>
<labels>
<curricular>au</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson01/AU01/AU01.html</location>
</launch>
</au>
<au id="au02">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/AU02/au02.xml</location>
</externalMetadata>
<identification>
<title>Personal Hygiene</title>
<description>This AU covers proper personal hygiene practices</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson01/AU02/AU02.html</location>
</launch>
</au>
<au id = "AU03">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/AU03/au03.xml</location>
</externalMetadata>
<identification>
<title>Inspections</title>
<description>This AU covers the three types of food inspections</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson01/AU03/AU03.html</location>
</launch>
</au>
<!-- Lesson 02: Micobiology and Foodborne Illness; Authorware format -->
<block id="B200">
<!--<objectiveRef targetIDs="O5"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0></model>
<location>Food Service/Lesson02/Lesson02.xml</location>
</externalMetadata>
<identification>
<title>Microbiology and Foodbourne Illness</title>
<description>This lesson covers three different types of hazards that may cause food borne
illnesses, microbiology, foodborne illnesses caused by bacteria, parasites and viruses, and
controlling the growth of microorganisms</description>
<labels>
<curricular>lesson</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<!-- AU04: Three Food Borne Illness Hazards -->
<au id="au04">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU04/au04.xml</location>
</externalMetadata>
<identification>
<title>Three Food Borne Illness Hazards</title>
<description>This AU describes the three different types of hazards that may cause food borne
illnesses</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU04/AU04.html</location>
</launch>
</au>
<au id = "AU05">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU05/au05.xml</location>
</externalMetadata>
<identification>
<title>Microbiology</title>
<description>This AU explains the importance of microbiology as it relates to food service</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU05/AU05.html</location>
</launch>
</au>
<au id = "AU06">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU06/au06.xml</location>
</externalMetadata>
<identification>
<title>Food Borne Illness Caused by Bacteria</title>
<description>This AU explains the role the chain of infection plays in a food borne illness
outbreak</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU06/AU06.html</location>
</launch>
</au>
<au id = "AU07">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU07/au07.xml</location>
</externalMetadata>
<identification>
<title>Food Bourne Illness Caused by Parasites, Viruses and Toxins</title>
<description>This AU identifies the most significant agents of food borne
illnesses</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU07/AU07.html</location>
</launch>
</au>
</block>
<au id = "AU08">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU08/au08.xml</location>
</externalMetadata>
<identification>
<title>Controlling the Growth of Microorganisms</title>
<description>This AU describes the critical control points necessary to control growth and
prevent food bourne illness</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU08/AU08.html</location>
</launch>
</au>
</block>
<!-- Lesson 03: Food Preparation and Servicing; Authorware format -->
<block id="B300">
<!--<objectiveRef targetIDs="O6"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0></model>
<location>Food Service/Lesson03.xml</location>
</externalMetadata>
<identification>
<title>Food Preparation and Serving</title>
<description>This lesson covers the minimum food protection measures, food preparation, safe
holding temperatures for cooked food, and food serving</description>
<labels>
<curricular>lesson</curricular>
</labels>
</identification>
<!--AU09: References and Objectives -->
<au id="au09">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU09/au09.xml</location>
</externalMetadata>
<identification>
<title>Minimum Food Protection Measures</title>
<description>This AU describes the minimum food protection measures required by food service
personnel</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU09/AU09.html</location>
</launch>
</au>
<au id = "AU10">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU10/au10.xml</location>
</externalMetadata>
<identification>
<title>Food Preparation</title>
<description>This AU describes the proper food preparation procedures for raw animal products,
eggs, fruits and vegetables, and home cooked food</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU10/AU10.html</location>
</launch>
</au>
<au id = "AU11">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU11/au11.xml</location>
</externalMetadata>
<identification>
<title>Safe Holding Temperatures for Cooked Food</title>
<description>This AU explains the time and temperature requirments for advanced preparation
foods, leftovers, and thawing</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU11/AU11.html</location>
</launch>
</au>
<au id = "AU12">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU12/au12.xml</location>
</externalMetadata>
<identification>
<title>Food Serving</title>
<description>This AU describes the proper food serving requirements</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU12/AU12.html</location>
</launch>
</au>
</block>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE course SYSTEM "C:\DTD\sco_csf(5).dtd" >
<course>
<globalProperties>
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service.xml</location>
</externalMetadata>
<curricularTaxonomy>
<model>ADL LMS Course</model>
</curricularTaxonomy>
</globalProperties>
<block id="B0">
<!--B00-->
<!--B000-->
<!--B100-->
<!--B200-->
<!--B300-->
<!--B400-->
<!--B500-->
<!--B600-->
<!--B700-->
<!--B800-->
<identification>
<title>Food Service Sanitation Training Refresher Course</title>
<description>This course has eight lessons that provide an overview of Food Service
Sanitation</description>
<labels>
<curricular>COURSE</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<block id="B00">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Pretest/pretest.xml</location>
</externalMetadata>
<!--<objectiveRef targetIDs="O1"/>-->
<identification>
<title>Course Pretest</title>
<description>This AU serves as a pretest to the course</description>
<labels>
<curricular>au</curricular>
<developer>Tesco, Inc</developer>
</labels>
</identification>
<au id="au0">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Pretest/pretest.xml</location>
</externalMetadata>
<identification>
<title>Course Pretest</title>
<description>This AU is the pretest for the entire course</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Pretest/pretest.html</location>
</launch>
</au>
</block>
<block id="B000">
<!--<objectiveRef targetIDs="O2"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Intro/au00.xml</location>
</externalMetadata>
<identification>
<title>Introduction</title>
<description>This AU serves as a title page, citing references and listing the lesson
objectives</description>
<labels>
<curricular>au</curricular>
<developer>Tesco, Inc</developer>
</labels>
</identification>
<au id="au00">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Intro/au00.xml</location>
</externalMetadata>
<identification>
<title>Course Introduction</title>
<description>This AU introduces the course</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Intro/AU00.html</location>
</launch>
</au>
</block>
<!-- Lesson 01: Health Requirements, Personal Hygiene and Inspections; Authorware format -->
<block id ="B100">
<!--<objectiveRef targetIDs="O3"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/Lesson01.xml</location>
</externalMetadata>
<identification>
<title>Personal Hygiene and Environmental Health</title>
<description>This lesson covers personal hygiene, health requirements and
inspections</description>
<labels>
<curricular>Lesson</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<!--AU01: Health Requirements -->
<au id = "AU01">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/AU01/au01.xml</location>
</externalMetadata>
<identification>
<title>Health Requiremnts</title>
<description>This AU covers health requirements</description>
<labels>
<curricular>au</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson01/AU01/AU01.html</location>
</launch>
</au>
<au id="au02">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/AU02/au02.xml</location>
</externalMetadata>
<identification>
<title>Personal Hygiene</title>
<description>This AU covers proper personal hygiene practices</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson01/AU02/AU02.html</location>
</launch>
</au>
<au id = "AU03">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson01/AU03/au03.xml</location>
</externalMetadata>
<identification>
<title>Inspections</title>
<description>This AU covers the three types of food inspections</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson01/AU03/AU03.html</location>
</launch>
</au>
<!-- Lesson 02: Micobiology and Foodborne Illness; Authorware format -->
<block id="B200">
<!--<objectiveRef targetIDs="O5"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0></model>
<location>Food Service/Lesson02/Lesson02.xml</location>
</externalMetadata>
<identification>
<title>Microbiology and Foodbourne Illness</title>
<description>This lesson covers three different types of hazards that may cause food borne
illnesses, microbiology, foodborne illnesses caused by bacteria, parasites and viruses, and
controlling the growth of microorganisms</description>
<labels>
<curricular>lesson</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<!-- AU04: Three Food Borne Illness Hazards -->
<au id="au04">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU04/au04.xml</location>
</externalMetadata>
<identification>
<title>Three Food Borne Illness Hazards</title>
<description>This AU describes the three different types of hazards that may cause food borne
illnesses</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU04/AU04.html</location>
</launch>
</au>
<au id = "AU05">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU05/au05.xml</location>
</externalMetadata>
<identification>
<title>Microbiology</title>
<description>This AU explains the importance of microbiology as it relates to food service</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU05/AU05.html</location>
</launch>
</au>
<au id = "AU06">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU06/au06.xml</location>
</externalMetadata>
<identification>
<title>Food Borne Illness Caused by Bacteria</title>
<description>This AU explains the role the chain of infection plays in a food borne illness
outbreak</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU06/AU06.html</location>
</launch>
</au>
<au id = "AU07">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU07/au07.xml</location>
</externalMetadata>
<identification>
<title>Food Bourne Illness Caused by Parasites, Viruses and Toxins</title>
<description>This AU identifies the most significant agents of food borne
illnesses</description>
<labels>
<curricular>AU</curricular>
<developer>Tesco Inc</developer>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU07/AU07.html</location>
</launch>
</au>
</block>
<au id = "AU08">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson02/AU08/au08.xml</location>
</externalMetadata>
<identification>
<title>Controlling the Growth of Microorganisms</title>
<description>This AU describes the critical control points necessary to control growth and
prevent food bourne illness</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson02/AU08/AU08.html</location>
</launch>
</au>
</block>
<!-- Lesson 03: Food Preparation and Servicing; Authorware format -->
<block id="B300">
<!--<objectiveRef targetIDs="O6"/>-->
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0></model>
<location>Food Service/Lesson03.xml</location>
</externalMetadata>
<identification>
<title>Food Preparation and Serving</title>
<description>This lesson covers the minimum food protection measures, food preparation, safe
holding temperatures for cooked food, and food serving</description>
<labels>
<curricular>lesson</curricular>
</labels>
</identification>
<!--AU09: References and Objectives -->
<au id="au09">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU09/au09.xml</location>
</externalMetadata>
<identification>
<title>Minimum Food Protection Measures</title>
<description>This AU describes the minimum food protection measures required by food service
personnel</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU09/AU09.html</location>
</launch>
</au>
<au id = "AU10">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU10/au10.xml</location>
</externalMetadata>
<identification>
<title>Food Preparation</title>
<description>This AU describes the proper food preparation procedures for raw animal products,
eggs, fruits and vegetables, and home cooked food</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU10/AU10.html</location>
</launch>
</au>
<au id = "AU11">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU11/au11.xml</location>
</externalMetadata>
<identification>
<title>Safe Holding Temperatures for Cooked Food</title>
<description>This AU explains the time and temperature requirments for advanced preparation
foods, leftovers, and thawing</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU11/AU11.html</location>
</launch>
</au>
<au id = "AU12">
<externalMetadata>
<source>ADL</source>
<model>ADL SCORM 1.0</model>
<location>Food Service/Lesson03/AU12/au12.xml</location>
</externalMetadata>
<identification>
<title>Food Serving</title>
<description>This AU describes the proper food serving requirements</description>
<labels>
<curricular>AU</curricular>
</labels>
</identification>
<launch>
<location>Food Service/Lesson03/AU12/AU12.html</location>
</launch>
</au>
</block>