Converting LabView 4 vi. to LabView 7 vi.

[Chris Merriman]

I have a collection of programs written in LabView 4. I upgraded to LabView 7 recently. I am now trying to open my old 4 vi's with no luck. No block diagram is the error that I'm getting. Any ideas on converting would be greatly appreciated.

Chris

[Dennis_Knutson]

Without a block diagram, you cannot open a VI in a newer version because the block diagram is required for the recompile. The only way to upgrade is to find the original VIs with the source code. No one, NI included, can recover a block diagram once it has been deleted.

[rolfk]

Chris Merriman wrote:

> I have a collection of programs written in LabView 4. I upgraded to
> LabView 7 recently. I am now trying to open my old 4 vi's with no
> luck. No block diagram is the error that I'm getting. Any ideas on
> converting would be greatly appreciated.

Well since the error message is no block diagram, you are out of luck
unless you can find the original VIs with their block diagram. VIs
without blockdiagram are like compiled programs where you don't have the
source code of. LabVIEW needs the block diagram to be able to recompile
the VI for the new version or even if only the plattform changes.

Rolf K