My Component is not working correctly

I’m working on a Gallery component for work, and I’ve just about finished. So to test it out, I created the SWC and installed it. I created a test file with the necessary elements, created the XML file, copied the images. When I test the movie, it works. However, if I view it outside of the authoring program, I see no gallery.

What could be causing this?

Also, when the component is placed in the authoring program, my place holder graphic is not shown.