has updated its StuffIt products to version 8.0.1. These include StuffIt Standard Edition, StuffIt Expander and StuffIt Deluxe.
Version 8.0.1 addresses a problem whereby Mac OS X application programs (which were stored in archives that don’t support Unix file permissions, such as .sit) can’t be run when they’re expanded. With the update, the StuffIt products will add the Unix execute file attributes as files are expanded; this allows expanded Mac OS X applications to run.
Version 8.0.1 of StuffIt Standard Edition, StuffIt Expander and StuffIt Deluxe require Mac OS X 10.1 or higher.