>>Okay, I win the stupidest dog trick of the year award....
>>
>
>SET PREACH ON
>
>This would have been avoided had you used a variable naming convention for your file handle:
>
>lhInvoice
>
>Helps code readability, and avoids variable/field confusion.
>
>
>SET PREACH OFF

SET PREACH ON ADDITIVE

You could have received a quicker answer if you provided some code with your question. As I have read the thread I kept muttering "Where's the code?".