Hi Robert!

The problem was the IsNull, see the below:

SELECT (IIF(ISNULL(FFTRACK.DESCRI_FR), FFFOLLOW.DESCR_FR, ;
  FFTRACK.DESCRI_FR)) AS DESCR_FR, ;
  (IIF(ISNULL(FFTRACK.ORDER_COMPLETED), "N", FFTRACK.ORDER_COMPLETED)) AS ;
  ORDER_COMPLETED; 
From fffollow ;
LEFT OUTER JOIN fftrack on fffollow.ident = fftrack.ident_fffollow ;
WHERE FFTRACK.CONSOLID = THISFORM.consolid AND;
FFTRACK.IDFILE = thisform.fileid;
INTO CURSOR cur_fffollow READWRITE 

I think that this solved your problem.
Bye!