Thanks for the info, Beos- all good info to keep in mind.
It's actually a fairly well known issue with that particular
driveway recolor, not packaging with lots- it may have started with
Pests- I don't quite recall.  
The recolor is there and it works, it just doesn't package with lots.  
I believe there is also an invisible driveway recolor by 
Frillen that used to, but no longer packages with lots.  
I have all expansions, patched (with the exception of FT- not being patched)
and no stuff packs. I also regularly delete my thumbnail packages,
groups.cache, and accessory.cache - and it still doesn't package with my 
lots.  Even if I plunk down that driveway on an empty lot and package it- 
it does not show.
There is an invisible driveway 
here that
does package and is, per creator, ok to include it in uploaded lots- it is
a standalone driveway with it's own guids, though- not a recolor.