i copied my saved files to my external hrd drive so i can erase my comp for a fresh start , so everythings done and cleaned and back to normal.. i installed the game and shivering isles and the kinghts of nine ..so then i copied my saved files back into the game folder where they belong. now the saved files that are saved in the shivering isles , do not load . they actualy attempt to laod but not even 2 secs on the load screen it crashes and says oblivion has an error. and my other saved files that take place in bruma , etc. when i fast trvael out of the town .. it crashes too..i spent over 400 hrs on my game and id hate to have to start all over again. if any one could help that would be awesome !
also... i tryed just restarting a whole new game and once the king was killed and i went to the sewers to exit the prison, the game will crash once i activate the sewer lid.it seems when i got into tamriel it crashes.
I brought over the save files from my family computer to my own that i built and i had that problem too. I only had Oblivion installed when i loaded my game up for the first time and it said that some content would be unavailable. My character that was saved in shivering isles loaded up in the imperial city. I downloaded shivering isles and knights of the nine and everything worked, ive had no problems with the files since, so maybe try uninstalling the game and just installing Oblivion first, try without any mods if you use them.
best of luck