I have been following along with a great demo from FileMakerMagazine.com on animated process indicators.
I have built the attached demo file, but there is a bug somewhere. Where I should be seeing an animated gif in my web viewer, I get this error instead.
I have copied the code verbatim, but clearly I am missing something. It's only a few lines of HTML. Can someone take a look and see if they can spot my mistake(s)? Much appreciated!