WDS - the answer file is invalid

I get below error:

Windows could not parse or process unattend answer file [X:\sources\wdsunattend\wdsunattend.xml] for pass [windowsPE]. The answer file is invalid.

Unattend.xml is as follows:

<?xml version="1.0" encoding="utf-8"?>
<unattend xmlns="urn:schemas-microsoft-com:unattend">  
<settings pass="windowsPE">  
      <component name="Microsoft-Windows-Setup" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" processorArchitecture="x64">  
            <WindowsDeploymentServices>
                      <Login>
                          <WillShowUI>OnError</WillShowUI>
                      <Credentials>
                              <Username>Administrator</Username>
                             <Domain>idchs</Domain>
                           <Password>Password</Password>
                          </Credentials>
                      </Login>
                  <ImageSelection>
                          <InstallImage>
                             <ImageName>Custom-Image-with-VMSW</ImageName>
                           <ImageGroup>Audience HS Group</ImageGroup>
                              <Filename>Custom-Image-with-VMSW-(2).wim</Filename>
                          </InstallImage>
                        <WillShowUI>OnError</WillShowUI>
                        <InstallTo>
                              <DiskID>0</DiskID>
                              <PartitionID>1</PartitionID>
                        </InstallTo>
                  </ImageSelection>
            </WindowsDeploymentServices>
            <DiskConfiguration>  
                  <WillShowUI>OnError</WillShowUI>  
                  <Disk>  
                        <DiskID>0</DiskID>  
                        <WillWipeDisk>false</WillWipeDisk>  
                        <ModifyPartitions>  
                              <ModifyPartition>  
                                    <Order>1</Order>   
                                    <PartitionID>1</PartitionID>  
                                    <Letter>C</Letter>  
                                    <Label>Vista</Label>  
                                    <Format>NTFS</Format>  
                                    <Active>true</Active>  
                                    <Extend>false</Extend>  
                              </ModifyPartition>  
                        </ModifyPartitions>  
                  </Disk>  
            </DiskConfiguration>  
      </component>  
      <component name="Microsoft-Windows-International-Core-WinPE" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" processorArchitecture="x64">
            <SetupUILanguage>
                  <WillShowUI>OnError</WillShowUI>
                  <UILanguage>en-US</UILanguage>
            </SetupUILanguage>
            <UILanguage>en-US</UILanguage>
      </component>
</settings>
</unattend>

Please help me.

Let me know if there is a way to  to validate the file after edit.