Merging PDFs through Assembler service returns error

Question

<?xml version="1.0" encoding="UTF-8"?>
<DDX xmlns="http://ns.adobe.com/DDX/1.0/">
    <PDF result="out.pdf">
        <PDF source="map.pdf" baseDocument="true"/>
        <PDF source="directions.pdf"/>
    </PDF>
</DDX>
This is the ddx file I am using as one of the input values .
It fails at this point
assemblerRes = svcAssembler.invoke(ddxBLOB, inputMap, assemblerSpec)
and the error returned is this:
com.adobe.livecycle.assembler.client.OperationException: ALC-ASM-S00-002: Failed to execute the DDX - error messages provided. Caused by: javax.xml.bind.UnmarshalException Caused by: org.xml.sax.SAXParseException: Content is not allowed in trailing section.; nested exception is:
com.adobe.livecycle.assembler.client.OperationException: ALC-ASM-S00-002: Failed to execute the DDX - error messages provided." String
Does this require any special changes in the server side .I have checked for the whitespace in the ddx document and there aren't any.Looks fine.
Any way to resolve this?
Fyi, I am have ES2 and am using it in .net 2.0
Thanks,
Dileep

Answer 1

Thanks for your input.
I am using ES2 in a .NET environment.I am still trying to figure our what is the actual problem with the ddx content that I am using.I scrutinised it well to see that it doesn't have any whitespaces that can cause this to error out while parsing.And its not huge too..It just 4 few lines of text saved as a XML file.
The ddx file should have the extension as .xml..is that right?