2 VIs open when I double-click main.vi in project manager

[PaulG.]

When I open my main.vi from project manager another vi opens up with it. Not really a problem but a little strange and annoying. LV2011.

[Matthew_Kelton · Accepted solution]

If it is always the same VI that opens, that VI is probably set to open its front panel when loaded.  Look in VI Properties->Window Appearance->Customize.  Right-hand Left-hand side, bottom checkbox.

[PaulG.]

Of course. Don't remember setting it, though. 

[Matthew_Kelton]

If you ever setup the VI as a top level application window in the Appearance settings, that would have checked the option.  If you went from that to customize, you would have had to manually uncheck it.

[PaulG.]

That's what happened. This vi is a top-level from another application.