Dane, Putting the characters of question mark followed by the letters d and l then an equals sign and the digit 1 works for any system with which I have been acquainted, suggest in future, when you send DropBox links remember to add these characters to the end of the link.
Colin Howard, who, by the Lord's providence has lived at his present address near Fareham in Southern England, since February 1992 and though parts of Hampshire suffer floods from this current stormy weather, because living well above sea level, no problems so far and hopes not to move in the near future.