Windows 7: Admin account blocked after syspreping WES-7

Hi Guys,
I need a bit of advise. I've got a WES-7 based system which I must sysprep so I could distribute clones to more PCs. I've created an answer file to make the sysprep process fully automatic. Everything looks fine until it is coming to auto log in to windows desktop. For some reason the password doesn't match to the login. Any ideas are very welcome

WES-7 (x64)
/generalize /oobe /shutdown /unattend:unattend.xml



The files are 64bit versions of course.


---------unattend.xml--------------
<?xml version="1.0" encoding="utf-8"?>
<unattend xmlns="urn:schemas-microsoft-com:unattend" xmlns:wcm="http://schemas.microsoft.com/WMIConfig/2002/State" xmlns:ew="urn:schemas-microsoft-com:embedded.unattend.internal.v1">
<servicing>
<package action="configure">
<assemblyIdentity name="Microsoft-Windows-EmbeddedEdition" version="6.1.7601.17514" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" />
<ewackageInfo releaseType="Product" customInfoVersion="1.0" />
</package>
</servicing>
<settings pass="generalize">
<component name="Microsoft-Windows-PnpSysprep" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<PersistAllDeviceInstalls>true</PersistAllDeviceInstalls>
</component>
</settings>
<settings pass="specialize">
<component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<TimeZone>GMT Standard Time</TimeZone>
<ProductKey>here should be licence key</ProductKey>
</component>
</settings>
<settings pass="oobeSystem">
<component name="Microsoft-Windows-Shell-Setup" processorArchitecture="amd64" publicKeyToken="31bf3856ad364e35" language="neutral" versionScope="nonSxS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<AutoLogon>
<Password>
<Value>Admin_account</Value>
<PlainText>true</PlainText>
</Password>
<Username>password</Username>
<Enabled>true</Enabled>
</AutoLogon>
<OOBE>
<NetworkLocation>Work</NetworkLocation>
<SkipUserOOBE>true</SkipUserOOBE>
<SkipMachineOOBE>true</SkipMachineOOBE>
<ProtectYourPC>3</ProtectYourPC>
<HideEULAPage>true</HideEULAPage>
</OOBE>
</component>
</settings>
<ew:answerFileInfo distributionSharePath="C:\Program Files (x86)\Windows Embedded Standard 7\DS64\DS" footprint="875560960" ecoreFootprint="875560960" />
</unattend>