New Post: UpdateListItems Error

Hi All, I'm upgrading my platform to run jQuery 1.8.3 and SPServices 0.7.2.  With these files in place, I get an error each time I attempt to run the UpdateListItems operation.  I do not get the error using jQuery 1.7.2 and SPServices 0.7.1a.   I've attempted to debug as much as I can but can't find where the problem lies.  The code I'm running is basically....

//Append the Document Approvals with a placeholder record for the new documentvar lngDocID = 1151;
  $().SPServices({
       operation: "UpdateListItems",
       async: false,
       batchCmd: "New",
       listName: "Document Approvals",
       valuepairs: [["TaskOrderDocID", lngDocID]],
       completefunc: null
   });

I've also tried a variant of this operation as....

  var lngDocID = 1151;
  $().SPServices({
      operation: "UpdateListItems",
      async: false,
      listName: "Document Approvals",
      updates: "<Batch OnError='Continue' PreCalc='TRUE'>"+"<Method ID='1' Cmd='New'>"+"<Field Name='TaskOrderDocID'>"+ lngDocID + "</Field>"+"</Method>"+"</Batch>",
      completefunc: null
  });

In either case, jQuery throws an error at line 7987 and just says "Object Expected."  I can't figure out which object it's looking for.  Now, with that, it appears the Update action does occur in both instances--the new record appears in the list as it should.  I can't figure out why jQuery is throwing an error.  Has anyone experienced this with the latest versions? Do you have any ideas on what might be causing it? Thanks!

Geoff