Pin Mapper has never been the most helpful tool, but now I'm trying to map 100 pins. If you make the slightest mistake or diversion during mapping, you get a most unhelpful error message.
If you've mapped a pin twice, you get "Duplicate pin numbers" but no clue as to which pin.
Anything else and you get "The part is incomplete because pin(s) are not mapped".
I've tried mapping a 100 pin TQFP part four times, the last time very carefully indeed, but still no joy.
Can't we have a helpful more verbose and helpful dialogue?