OK fresh eyes and mind this morning and it all seems to be working fine.
16 object is reported missing until I delete the 16 library and replace with the 15 library.
Then old object is back as good as new.
Thanks again Gergely.
Versions 6.5 to 22
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Dell Precision M6800 - i7 4700MQ @ 2.40GHz, 16GB RAM, AMD FirePro M6100 (2GB), Windows 7 64bit