.EXE "Stopped at Unknown"?

[Joymaker]

As I transform my application into a .EXE file using application builder, I'm running into some problems involving OpenG vi loader stuff. Trying to debug it, I changed one of my SubVI Node Setups to show the front panel of its subVI (second illustration). This was the only change from the previous run.

I built, I ran, I got the absolutely bizarre error message on the first illustration: "LabVIEW: Null window... Stopped at unknown." What the heck? How do I troubleshoot such a thing?

[DJColeslaw]

The node configuration to show the front panel when called is not supported in the LabVIEW runtime engine. Try opening that subVI and setting it to show the front panel when called in the VI Properties (File >> VI Properties, and then select "Window Appearance" from the drop-down). In the resulting dialog, select the "Custom" radio button and then click the "Customize..." button. You should see the following dialog:

In the bottom group on the left, you'll find the same setting. I believe this one is supported in the runtime engine.

[UliB]

In addition to what Andrew wrote:

As far as I know, there is an automatic process in the application builder to remove the front panel of a VI if the Window Appearance has not changed or the VI is no Startup VI.

In the "Source File Setting" page of the Application Builder you can check and change the default setting for every VI in your project.

[pincpanter]

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@DJColeslaw  ha scritto:

The node configuration to show the front panel when called is not supported in the LabVIEW runtime engine. Try opening that subVI and setting it to show the front panel when called in the VI Properties (File >> VI Properties, and then select "Window Appearance" from the drop-down). In the resulting dialog, select the "Custom" radio button and then click the "Customize..." button. You should see the following dialog:

In the bottom group on the left, you'll find the same setting. I believe this one is supported in the runtime engine.

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The node configuration actually works in a compiled program, I used this feature many times.

What's documented in the linked page means that you cannot programmatically change this vi property (which I guess corresponds to the Customize dialog option) while the vi is running.

That said, I got that error sometimes, for example when I tried to use the Cursor vi's in a vi whose FP was not visible. This is understandable, because the application needs to access the handle of a window that was not even created. However, I cannot see any such code in the posted vi.