Continually prompted to save changes

[JTebbe]

I have a VI within a project that asks me to save changes every time I close the VI or project regardless if I've actually made any changes. The reasons are always "VI recompiled" and "Type Definition modified". If I save the changes, close the project, reopen the project, then close again, I will be prompted again to save changes. Any ideas where I begin to figure out what's going on?

[Alexander_Sobolev]

Any conflicts in project?

Something else expects to see typedef from another location. Or something else wants different typedef with the same name.