Ok, lets try to diagnose this.
In wp admin, can you see the Backdrop Slideshow panel containing your image(s) somewhere under the editor on post / page edit screens?
Are you using a custom “Containing Element” setting or just using the default body?
Have you confirmed that the backdrops are enabled for the post / page types you want (see my first response)?
If page is not checked in the Enable Page and Post Type Slideshows section of the settings page then you won’t see any images on pages and won’t see the Backdrop Slideshow panel on page edit pages. This was a new feature in 0.6.5 an it’s possible that your settings haven’t migrated properly. Just saving the settings should fix it, if that’s the problem.
Hope that is some help, if it’s not resolved by changing and saving the settings then I’d really need to see all your global settings and those of any pages that should have images. Feel free to mail me if you’d prefer.