Hello, I am creating a custom smart service to convert .odt file to .pdf fi

Hello,
I am creating a custom smart service to convert .odt file to .pdf file.I am using xdocReport lib for that.
My code:
String inputFilename = cs.getInternalFilename(inputDocument);
FileInputStream in= new FileInputStream(new File(inputFilename));
OdfTextDocument document = OdfTextDocument.loadDocument(in); // getting error at this line          
PdfOptions options = PdfOptions.create();
OutputStream out = new FileOutputStream(new File(outputFilename));
PdfConverter.getInstance().convert(document, out, options);

It works properly as a standalone java class but when I create a smart service it gives me error like:

ava.lang.VerifyError: (class: org/odftoolkit/odfdom/pkg/OdfPackage, method: getDom signature: (Ljava/lang/String;)Lorg/w3c/dom/Document;) Incompatible object argument for function call
2013-09-12 15:08:22,457 ERROR [STDERR] (WorkManager(2)-88) at org.odftoolkit.odfdom.doc.OdfDocument.loadDocument(OdfDocument.java:219)
it is giving error at load...

OriginalPostID-81081

OriginalPostID-81081