I am running a vi which will run ok the first time I run it but doesn't execute correctly subsequent times. If I close the vi (return to labview startup screen) and reopen it, then it works again. The vi in question uses labpython to run some python code. It is not possible for me to change this code, which is where the underlying bug must be located. Is it possible to remove or delete a vi from memory similar to closing vi and returning to labview start screen? I know this isn't elegant and will be slow, but it seems my only option. I am using Labview 2009 SP1 Cheers Ian

Ian, you have to make sure, that the VI is not active anymore (so use either "Call By Reference" node or set the parameter "Wait Until Done" to true for the "Run VI" invoke node, so both are blocking calls!) before closing the reference. You can try a "Request Deallocation" after closing the reference. hope this helps, Norbert

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