I'm trying to get the managed_file progress bar working in a custom theme. Right now, when I start an upload, the empty progress bar widget appears in the form, but it doesn't visually update while the file is being uploaded. If I switch my site from my own theme to Bartik, the bar works properly, so it's evidently a theming problem. (This also confirms that I've got all the uploadprogress stuff properly installed.)
theme_progress_bar, and tried adding it to my theme's template.php file, renaming it to
MYTHEME_progress_bar, but it didn't work. Any advice on how to get it to work? Thanks!