I would have to know how you got there.  Did that message pop up as soon as you opened the full page editor?  Did it pop up after you tried to use a feature in the full page editor?  Was auto roll length turned on at the time?  What printer and paper size are you using?

Regards,
Mike

Probably not helpful, but FWIW, over the years I have had that error occur from time  to time after having been in QIMAGE uninterrupted  for a very, very, long time - I mean hours and hours and having done multiple edits, prints and page setups.  Problem was always solved by closing and reopening QIMAGE.

Just after I posted the comment above in this thread, I found a new and creative way to get this error message – and it was all my own doing. I am creating a photo-book of certain themed photos from the past 15 years – so I reviewed all of these and created a QU album with candidate photos. These photos spanning many years were from five different cameras.  Then as I started to edit individual photos, I decided that I did not want to mess up the original edits, so I used the QU copy function to create a new folder and copy all of the images from the album into it. 

Problem was that many of these file names were from default Nikon naming convention (yes – I know I could have avoided that by using the QU flash drive copy function) and, so there were a couple of duplicate file names from photos from different cameras! This is not a problem if I had just stayed within the album.  But in the copied folder I had a couple of photos where the thumbnail did not match the photo!! They were from different cameras and of different size and I suspect that in addition to the thumbnails, the header information was wrong as well.  As soon as I opened one of these in the image editor – voila – I got the list index out of bounds error. Subsequently, I renamed the offending photos and recopied – problem solved.

I wasn't really thinking of this as a QU problem.  It's wasn't a problem as long as I worked within the album. It only became a problem when I told QU to copy all of the images from the album to a new folder.  SO QU was then retrieving all of those images - and there were several hundred - each from their proper folder - and making copies of them in a new folder that it created.  The copied image(s) from the couple of files with duplicate names are the ones that exhibited the problem.