We released SAS Enterprise Guide 4.1 originally in March 2006. Microsoft Vista was on the horizon then, but was not available to the general public until January 2007. Even then, SAS Enterprise Guide could run on Vista, but installing it was difficult. The new security model in Vista would prevent some of the installation routines from completing correctly. While it was possible to "hand-install" the application, SAS could not officially support this configuration.
We have fixed the installation issues and remastered the SAS Enterprise Guide media. As a bonus, the new release of SAS Enterprise Guide also includes all of the latest fixes (through hotfix 6). Any SAS software order that includes SAS Enterprise Guide 4.1, including the SAS Foundation/SAS Enterprise Guide DVD and many SAS solutions, will benefit from this new revision.