I wrote a nx open program in VB to cycle throgh my drawings and report number of rows in parts list. In most cases it works well but sometimes, the VB program says the number of rows in the parts list is 0 while I have at least 3 or 4 rows and they dom't hace any manual text.
I use NX 9 but some of my drawings are created in NX 8.
Since it works on "most but not all" of your parts lists, I'd guess that there is something different about the ones where it does not work. Perhaps those lists are out of date and need to be refreshed?