Thanks Vilters... yes, you're right... it has now occurred to me that I can use Stuffit to create an archive of my Poser 9 content runtime folder, this archive utility then does a folder merge when it extracts.

Not sure why OS X introduced this particular regression with Lion... there is quite possibly a way round it, that I'm just not aware of.

But still I plan to start reorganising to combine different types of Poser files (e.g. for one character or set) into the same folder as you mentioned... I think that sounds more intuitive.

;-)