Scheduled script error "Invalid reference key [0]" on nlapiSubmitRecord

Hi,

  I have a Scheduled script to create events for each lineitem of a SalesOrder.

I am getting an error "Invalid reference key [{1}]." when it reaches nlapiSubmitRecord.I am getting the two test emails but not getting the third mail(shown in the code below).

I had posted this issue 3 weeks back and I got a reply saying that this is an issue and it will be fixing soon and the post will be updated as soon as it is fixed.But I did'nt get any response after that.

Any idea?

function createEvent(title,serviceDateD)

{  
    nlapiSendEmail(-5, "10972", 'Corp Floors: 1', "test" , null);