I think I've posted about this to the CS sub-forum in the past but I'm putting this here for better visibility to see if anyone else has run into this issue before.

Every now and then when working on Lyithdonea, I'll go to an area and see https://dl.dropboxusercontent.com/u/42876609/AZ_file%20corruption.png. All the references are still there, I can double click on them and it'll try to center on the object but it won't find it. There are no errors, just blank amnesia. This is incredibly frustrating because I can lose weeks worth of work due to the fact that it might be an area which I haven't worked on in a while (in fact, it typically is). Usually, I can find an old version I've backed up, delete everything but the missing cells and then merge the two plugins together. But that's not always the case.

Has anyone else run into this before? Have suggestions for fixing the ESP? This happens often enough that it absolutely hinders progress and destroys my motivation.