OK, I take this back. Once back in July of 2002 this happened: "109 - Record is in use by another user" - this looks to be in the exact same callstack where error 2072 has happened. So, it does look like same problem, different error message. May just be some sort of timing issue. I'm not going to worry about it or lose any sleep. If I can ever figure out how to re-produce in the context of a VFE standard presobj with a list, I will take it up with F1 to possibly find a framework workaround.