Palliser -
Thanks, I read to delete or move, the directory, which i did and it didn't find the wire.h at all. But, now i realize i had about 4-5 ide-sketches open, so closing one didn't release the library. Closed them all and reopened - finally it is now using the due library. You would think the arduino programmers would have taken care of this sometime back as i see this is an old and on-going issue with trying to work with the due (and now Gallileo - people report the same prob).