Continuing the discussion from Error in opening auto save?:
@jjwood1600 and I have both run into instances where our computers lost power and shut down while studio was creating an autosave, corrupting it in the process. I assume what happens is that studio deletes the existing autosave, creates a blank .rbxl file, and then starts writing the autosave to it. When the computer shuts off during that process, it’s no surprise that the autosave is corrupted because it wasn’t finished off properly. This can be problematic because since the previous autosave was deleted, we have to start back from when our save file or site-published place was last updated.
Studio should create and write to a temporary file elsewhere for autosaves, move the new autosave over to the autosaves folder, and only once both of those are done, delete the old autosave. This could prevent what happened to jjwood and I from occurring. Of course, I have no understanding whatsoever of how file reading/writing works at a lower level, so this could all be wrong.