Newly opened vi needs to be saved?

[VI_Joe]

I opened a VI immediately after my computer had just been rebooted and the filename was followed by a * which indicates that there are changes that haven't been saved.  How can this be?  I just rebooted and I haven't made any changes yet.  When I tried to close the VI, it warned me that there were unsaved changes to several sub-VIs.  Can anyone explain?

Thanks in advance.

[altenbach]

What are the changes? The dialog will give you much more detailed information!

Could it be they were updated from a previous version?

Did you move the VIs to a different location?

[smercurio_fc]

Do any of the subVIs use ActiveX or .NET calls? It's possible something got screwed up with an ActiveX component, and when you open the VIs, LabVIEW is relinking to the ActiveX component.

[mishkin]

VI Joe,

You should be able to select "list unsaved changes" in that dialog box to see what exactly was changed. I am guessing the VI was simply recompiled in the current version of Labview. For example, if the VI was written in 8.6 and you open it in 8.6.1 , it will ask you to save the changes because simply opening that VI causes Labview to recompile it for 8.6.1, and those are the unsaved changes. 

In any case, that dialog box will give more detail on the issue.