Ok, here's what I now have:
If (isnull({Db.field1}) or ({Db.field1} ='')) then
totext "VOID"
else
Totext({Db.field1}, 'MM/dd/yyyy'
I'm getting this error: "The remaining text does not appear to be part of the formula", and it highlights
"VOID"
else
Totext({Db.field1}, 'MM/dd/yyyy'