There is no value "1" for &display parameter.. It should be "normal", "embedded", "childgalleries" or "pictureview".. the default value is normal.
If you see the snippet call just as text on the page, check the page contents without RTE (or in the RTE’s codeview) to see if there’s something wrong with the call. (EDIT: eg, the call is on multiple lines or there is <!-- --> comment tags in it, or something..)
"He can have a lollipop any time he wants to. That's what it means to be a programmer."