This looks like my code. Can you post your code? Post the call to exewait and exewait. Also if you have a similar case statement to mine then which one is running and what are the values being passed?
For example, see below:

IF !EMPTY(lcshort) .AND. !EMPTY(lcpath)
   lcpath = "'"+lcpath+"'"
   SET DEFAULT TO &lcpath
   set step on
   *check values of lcshort, lcline, hdir, xacordform, lcpath, etc
   llacordok = ExeWait(lcshort,lcline+hdir+xacordform+'.xfdf',lcpath)
ELSE
  *what are the values of m.cAppName, lcline, xacordform, hdir
  llacordok = ExeWait( m.cAppName, lcline+xacordform+'.xfdf',hdir)
ENDIF

>
>Would you be able to run the program (or do from memory) what is being passed in for all 3 params for both calls to ExeWait()? That would help a LOT (I have tried lots of things).
>
>Thanks,
>Albert Gostick