Norm,
let's assume I have two VIs that are running in parallel and sharing an ESF based session. VI 1 started earlier so it created the session whereas VI 2 found the active reference. Excellent.
The question now is what should happen when I stop VI 1 and it closes the reference with 'force destroy' flag set to FALSE. Should my session reference in VI 2 still be valid? Since the 'owner' is not running anymore I guess it shouldn't and this is also what I'm experiencing. Can you confirm it? If yes, I would like to know more about the version of ESF you mentioned.