BPC 10 MS - Export Data problem

Hi,

I'm having a problem with the Export package in BPC (v10 for MS).

I am using a transformation file as below (amended following an earlier search here):

*OPTIONS

  FORMAT = DELIMITED

  HEADER = YES

  DELIMITER=TAB

  VALIDATERECORDS=NO

  ROUNDAMOUNT = 7

  OUTPUTHEADER=CATEGORY,ACCOUNT,ACCTDETAIL,DATASRC,ENTITY,RPTCURRENCY,SEGMENT,TIME,AMOUNT

  SPECIFICMAPPING=YES

  OUTPUTDELIMITER=TAB

*MAPPING

  CATEGORY=CATEGORY

  ACCOUNT=ACCOUNT

  ACCTDETAIL=ACCTDETAIL

  DATASRC=DATASRC

  ENTITY=ENTITY

  RPTCURRENCY=RPTCURRENCY

  SEGMENT=SEGMENT

  TIME=TIME

  SIGNEDDATA=AMOUNT (have tried this as AMOUNT=SIGNEDDATA too)

*CONVERSION

I keep getting the following error.

Data file (or table) is empty; check the data file (or table) and try again [filepath to temp file that I can't access]

Can anyone advise on what the problem might be?

Thanks,

Bryan