I seem to have run into a problem. I was playing elder scrolls oblivion the other day, doing the mission "Boots of Springheel Jak" when I found the diary in the coffin, but nothing happened. I saved it and went on to go do other missions and planned on Googling it later. Turns out the NPC was supposed to appear and attack me, but he never did (I assume this was just a bug that caused him not to spawn in) and I saved it in both of my save slots (so I can't restart that mission without restarting the game). Last I seem to have lost the diary, which probably destroyed my last chances of completing the mission without cheating or abusing game physics.
So do I have any way of completing that mission, or am I screwed? If it is possible I wouldn't mind editing the save files.
Edit: I seem to have forgot to mention that I'm on console.