I think it did. That HLF thing I did a few years ago was done in ASP 10 and I did a lot of nesting with those characters and it's almost entirely animated with bones. ASP 9.5 might have had it too because the characters in Scareplane also had a lot of nesting--but that's too far back for me to remember exactly, and I really didn't know what I was doing in ASP at the time anyway.
One thing that stumped me back when I was starting out was that Layer binding a group prevented me from individually binding the contents of that group. I'm not sure that's what's happening for the OP but it's something to check.