Hello again Ciaràn,
I did get the autson slideshow working fine, thanks to your suggestion to give the files a lowercase extension name. However, now I have replaced the original files with new ones - these are all lowercase extension - and again there the slideshow says it 'can't find one or more pictures'. These things I have tried already:

* I have emptied the slots I'm not using, leaving only 2 in place
* using "/images/banners/slide1.jpg" AND "images/banners/slide1.jpg"
* putting the old pics, with their old names, back
but nothing works. EEK! Please help!
Regards,
Marjolein