I was able to successfully import the Eleventh Doctor Stained Glass (just needed to manually input the colors, but that's easy).
I did have a little trouble with the Grey Havens Stained Glass .pdf. I ended up grabbing the .sth file that was in the post, changed it to black and white (just in case the issues was the fact that it's a very large pattern, with many full colored pages), and then turned it into a fresh .pdf...imported just fine and just needed numbers

Any other PK users out there?!?!?