If you have a manual for your TV then check to see what kind of picture format it will accept, .JPG, .GIF, .Bit map, etc.
Maybe it won't accept the format your photos are in at the moment.
Just a thought.
I have done this many times before but never encountered this problem.
The disc will show the pictures in Picture Navigator but will not allow a slide show !
I don't know if this is any use to you, Perose, but if you download a graphic program called Irfanview, which is FREE, you can organise your pictures into a slide show within Irfanview and this may show them on the TV.