Eric,
Appreciate your quick response. the "some process here" block basically set the matrix line data is the warehouse is Bin Location enabled. commenting out those codes makes no difference to the situation, that is why I didn't post them.
I agree with you SBO 9.0 changed the way to free COM objects.
What do you mean "only the first instance needs to be freed"? Do you know any SAP notes about that? I am going to need it to convince our guys here.
Thanks again for your help!
Michael