Error1012 Metrics:Size of Block Diagram

[Altomare]

Hi, there is something strange in LabView8.2. If I removed the block diagram from a VI and then I try to read the size of the block diagram with the property node "Metrics:Size of Block Diagram" it returns me an error: Error 1012 Property Node (arg 1) in prova82.vi<APPEND>
Property Name: <b>Metrics:Size of Block Diagram</b>.

If I do exactely the same thing in Labview 7.1 it correctly returns me "0" with no error.

Any idea?

Thanks.

[pincpanter]

Returning an error may be acceptable if you are trying to get the size of an object that doesn't exist.
Check the attached vi: this code works for both LV8.2 and LV7.1