I have fixed a bug found by Paul P. where V0410 would not run properly if there was no existing RenumKiCadPCB directory in /users/appdata/roaming (Thanks Paul!).
Also at his suggestion I now show a warning and do not save the updated netlist file if there are netlist errors. This is usually because the netlist is out of date with the schematic and PCB so it makes it easier to fix (just regenerate the netlist from the schematic).
Here’s the link on Github https://github.com/BrianAtDocumentedDesigns/RenumKiCadPCB0401_July12_2019/tree/master