Scaling doesn't work in Firefox

After lots of trial and error, I finally got the scaling to work in IE7 but Firefox 3.0.6 doesn't display my images. It was displaying them in full size before I got the scaling configured properly. But now it just display my node title and no image (no placeholder either)

I'm using the GDK api, I have my file directory set to private

I've got the following action in my preset: Sacle- width:60, height: , upscale: No, Weight=0

My View is config'd as a block with a View Type of "Slideshow Teaser List"

Any help is greatly appreciated.