try {
productReferenceVector = (Vector<Hashtable<String, Object>>) client
.execute("filemgr.getProductReferences", argList);
} catch (XmlRpcException e) {
throw new CatalogException(e.getMessage());
} catch (IOException e) {
throw new CatalogException(e.getMessage());
}
if (productReferenceVector == null) {
return null;
} else {