Hello! Was beginning to think this only happened to me!
Yes, I am on network.... Your reasoning makes sense. When this happens to you, have you found a way to re-enter the project? Seems that once i get this message, I am permanently locked out of that .vce. Fortunately making a copy of the file works, but then i have two of everything on a job and it takes up a lot of space.
Since i posted originally, I have found that if i close a project and then save on prompt, it happens less than when i just do a 'random' save while working on the project.
I had my tech guy go over everything too, but he is stumped.....