You may find your "corrupt image" is something that is actually off the visible slide area. How or why it is there is beyond me, but I have seen similar errors about "corrupt" files in that way. Go to the slide layer in question (for example, Scene 2) and look at the base layer; you may need to zoom out to see the workspace around the slide; or look in the timeline for "Picture 1" and see if you can find it that way. I would then delete it and save the file with a different name; then see if that changes the error message(s) you are seeing.
