MS Word 2003-createnewdocument with template in mailing labels

when i will try to create a wordobj.mailinglabels.createnewdocument(Averytemplate) i got this error message. i am using ms word 2003. it is working fine for word 2000 and 97.

this error came for 5630,18663 templates

Error: One of the values passed to this method or property is out of range.

with hope