What's new in Paperless 2.1?
Here is what's new in Paperless 2.1.0:
Fixed a number of crashes, and generally improved stability for users on Mac OS X 10.7 "Lion" (future releases will address more Lion-specific issues).
Removed support for Mac OS X 10.5 "Leopard."
Note: Paperless 2.1 is not supported under OS X 10.5 ("Leopard").