How can I display the path where the SimpleViewer Flash (.swf) object is looking for the images?

I may be beating a dead horse, but I'm trying to get SimpleViewer to work in Drupal 6. I can't see any reason why it shouldn't. The Flash viewer.swf shows up, but no images. I briefly got it working to the point where I could see the Title I put in the XML file as well as image placeholders in the Flash object (signified by X's), and could right-click on them to see their path in a new window. It looked like Drupal was redefining their path and I thought I could fix it with a symbolic link or putting the images somewhere else where Drupal could see them.

Some people used Flash Gallery with Drupal 5 (which doesn't work with Drupal 6 yet), but I'm not convinced that this is necessary. Do I need to buy the Pro version to put in debug statements?

Thanks.