Now take a note of where the problem element is in the timeline; so look at the element immediately before and after it.
Close the scribe containing the copied elements and open up the scribe with the missing timeline.
Find the element before or after the problem image on the canvas (it should be showing up normally).
Double click on the element before or after on the canvas to bring up the element properties.
Use the previous/next buttons in the element properties to move to the problem image and delete it using the trash can icon.
Save the scribe, exit to the projects screen and load the scribe up again and the timeline should return.