(2023-05-15, 4:53)Martin Stockton Wrote: Yes it is on the LDCad program
Regards Martin.
It sounds like you placed the updated parts in a different location than your existing parts library. (I wonder if your old parts still snap together, just not the new ones?)
If you go to the menu Prefs->LDraw->Search (library) paths… can you show us (or tell us) what appears in the window that comes up? It will look something like this: