It's added by my website to combat piracy. The signature identifies the user who downloaded the zip file, so when I find it hosted elsewhere, I can direct my legal council to the correct person. The intended consumer of the zip files available on my website is the PHP ZipArchive class - which ignores the signature. You might have saved yourself a lot of time and effort if you had taken my earlier advise - and used something else to unzip it. Now that the cat's out of the bag, I will need to do something...
All righty then! Thanks for the education. This is an excellent program that I've been using for over a decade!
Playing around with this, it seems to ONLY happen with the -n flag. displaying an individual natal chart seems to work fine with -b.
not working with -b