That was it Michael.

Sorry for the delay, but I had to get some railings for a deck I'm (slowly) building sanded & varnished.

Anyway - I had Used the DD in a pkg file to try to get it to compile. The code only used a procedure from the DD, so I was able to remove the Use & do a Register_Procedure instead.

Many thanks for this - I'm not at all sure I would've figured it out on my own!