Developer Forum

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

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.

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