Saving of decrypted version of password protected document gives an error

For a sample owner-password-protected pdf that I can decrypt and save to another file in Pdfbox 1.8.5, however, in the 2.0.0 build created using the repository checked out of svn, I get an exception while saving.
java.io.IOException: Cannot save a document which has been closed
at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1229)
at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1215)
at org.apache.pdfbox.pdmodel.PDDocument.save(PDDocument.java:1203)

The code snippet is as follows-

pd = PDDocument.load(is);
if (pd.isEncrypted()) {
  try {
	  pd.decrypt("");
	  pd.setAllSecurityToBeRemoved(true);
          fNameStr = fName.substring(0, fName.lastIndexOf('.'))
							+ "_new.pdf";
          System.out.println(pd.getCurrentAccessPermission()
	   pd.save(fNameStr);  // java.IOException at this line
	} catch (Exception e) {
		e.printStackTrace();
	} finally {
                       pd.close();
			if (is != null) {
			  is.close();
			}
					
	}