I created a new Symbol and linked it to a New Package.  It's a pre-built 12V PSU so wasn't in the library so I started from scratch.  Worked fine in the schematic, and wired fine in the layout.  But if I either do a 3D view or create and view the Gerber, the whole module has totally white silkscreen rectangle.   I assume this went wrong when I created the new package ?   Any ideas how I fix it gratefully received. Thanks Mike