topic Cannot save edits to VI in LabVIEW

Cannot save edits to VI

Reclined — Tue, 26 Jul 2022 13:12:57 GMT

I opened the Evaporative Cooler example to have a look, and have bumped up against something seemingly basic that doesn't seem to work - in the application launcher lvlib, there's Localization.VI where you can change what appear on the splash screen. I can change the contents, and if I run the app with the vi still open, I can see the changes, but it's opened the vi read only, and I cannot find where to make it so I can actually save my changes.

Any ideas appreciated!

It's not in run mode, and it's unlocked in the protection properties.

Thanks

Re: Cannot save edits to VI

billko — Tue, 26 Jul 2022 13:22:39 GMT

@Reclined wrote:

I opened the Evaporative Cooler example to have a look, and have bumped up against something seemingly basic that doesn't seem to work - in the application launcher lvlib, there's Localization.VI where you can change what appear on the splash screen. I can change the contents, and if I run the app with the vi still open, I can see the changes, but it's opened the vi read only, and I cannot find where to make it so I can actually save my changes.

Any ideas appreciated!

It's not in run mode, and it's unlocked in the protection properties.

Thanks

If this is an NI example, I recommend NOT changing the example. Instead, copy the project somewhere and work on that. You want to leave the examples pristine.

I couldn't find the example, so I can't tell you what might be wrong.

Re: Cannot save edits to VI

altenbach — Wed, 10 Dec 2025 16:49:46 GMT

Yes, don't mess with shipping VIs!

Does this example come from a specific toolkit? Which one?

Maybe the lvlib library itself is locked?

Re: Cannot save edits to VI

Bob_Schor — Tue, 26 Jul 2022 20:34:52 GMT

@Reclined wrote:

I opened the Evaporative Cooler example to have a look

Is this, by any chance, a sample/demo Project for Actor Framework? If so, you might get more notice by including "Actor Framework" in the Title ...

Bob Schor

Re: Cannot save edits to VI (actor framework)

Reclined — Wed, 27 Jul 2022 07:53:35 GMT

Yes sorry, it is the Feedback Evaporative Cooler project template, which is based on the actor framework. It's one of the templates presented as a choice on a new installation of 2017, and when you open it, it asks for a new name to create a copy, so you're not messing up the original.

Re: Cannot save edits to VI (actor framework)

Bob_Schor — Thu, 28 Jul 2022 01:42:48 GMT

I recall struggling with that 5-6 years ago (when I had a little more "free time"). Of course, right after Actor Framework was introduced, Asynchronous Channel Wires were being developed, and I got involved with some of the pre-release testing, and have been using them ever since.

If memory serves, wasn't there a "completed" version of the Demo included that you could run when you couldn't quite get all the Puzzle Pieces to fit in the right order? But don't worry, now that Actor Framework is in the title, other "Actor" actors will probably offer useful suggestions.

Bob Schor

Re: Cannot save edits to VI (actor framework)

Reclined — Thu, 28 Jul 2022 11:28:36 GMT

Thanks, Bob.

It doesn't seem to be a general issue with the framework, just this particular VI. I haven't thoroughly checked through, but it's the only one I've seen in the project behave like this.

There is another localization.vi under Application/Chamber Environment Application.lvlib/Chamber Environment Application.lvclass which likewise seems to open read only, but behaves slightly differently - If I edit then close the first one, changes are lost, but when I close the second one, changes are onnly lost when I close the project.

Re: Cannot save edits to VI (actor framework)

altenbach — Thu, 28 Jul 2022 15:12:46 GMT

@Reclined wrote:

Yes sorry, it is the Feedback Evaporative Cooler project template, which is based on the actor framework. It's one of the templates presented as a choice on a new installation of 2017, and when you open it, it asks for a new name to create a copy, so you're not messing up the original.

Are you sure that if you create a copy of the project that it will also create a copy of the lvlib? I would not assume that it does. You can check the location to make sure.

Re: Cannot save edits to VI (actor framework)

Reclined — Thu, 28 Jul 2022 15:44:23 GMT

altenbach, it is in the project folder, not a shared file