All considered, it doesn't seem the least bit likely that PrintLife d/l'ed from the App Store will work for Douglas, as it's the same version as the one on Chronos's website.
It will be interesting to see whether it works or not. Version numbers are NOT a good indicator of differences between App Store and non-App Store versions of the same app. Apple's insistence on App Store versions being fully sand boxed often means the non-App Store version may have features that cannot be implemented if the app is sand boxed. I have encountered situations where... <snip> .
Oops, I had forgotten about that (
for a rare change
), but lack of full functionality seems like something that ought to be prominently mentioned on Chronos's PrintLife page, and I didn't see any such.