Always asking for saving sub.vis

[Robert_Schröder]

Hi, me again,

everytime I close a vi, even an unchanged one, I get asked, if I want to save all sub.vis. Can I change this setting?

thx

[Dennis_Knutson]

Well, something has changed to require LabVIEW to recompile your VI and subVIs. This could be as something as simple as moving the subVIs to a different folder. What does it say when you click on the Explain Changes button? If you do save all subVIs, that dialog will disappear the next time you open the main VI.

[Robert_Schröder]

no, no changes were made, even when I put a express.vi in and delete it again, because I do not need it, the message window opens, asking me if I want to save the sub.vis of this express vi. It is quite bothering.

[GerdW]

Hello Robert,

if you place something in a vi and delete it some time after then you have changed something. So LabView has to recompile and so wants to save this vi...

Best regards,
GerdW

[Ingo_Schumacher]

If LabVIEW loads VIs or SubVIs generated by an elder version of LabVIEW, it automatically recompiles the code - even if you dont run the vi.
This results in a change of the compiled portion of the code - the portion of code that is running when you start the VI. That is why LabVIE is detecting changes in the vi even though you did not do anything yourself.
There is one thing you can do: use the masscompilation to update a whole directory of VIs. You find this option in the menu tools-> advanced -> masscompile. Depending on the number of VIs this will take some time, because every VI has to be loaded, recompiled and saved. Mind that afterwards you wont be able to open the VIs with elder LabVIEW versions.