Re the bug you report:
As I understand, are you saying that when you double click on a capture in the timeline, and you do this for the 2nd scheduler job in an evening, the image doesn't display? I tried to reproduce with the simulator but it worked ok for me. Can you please single click on one of the captures in the timeline that doesn't display, and look at the filename shown in the "Details" table, and make sure that file exists on disk? Is there something odd about the filename? Can you reproduce with the simulator? Any clues would be helpful. FWIW, someone did make modifications to the file naming in Ekos recently, so I suppose this could have caused issues here.