The error "ERROR: Error 1311.Source file not found: E:\WINNT\INSTALL\BE\Data.Cab" appears when installing Backup Exec
ERROR: Error 1311.Source file not found: E:\WINNT\INSTALL\BE\Data.Cab
This error may occur if the Windows security policy is set to restrict CD access only to a user who is locally logged on. The Windows Installer does not install the software as the locally logged-on user; if that policy is in effect, Windows Installer cannot access the CD.
Or if the installation is a zip archive, it has not been extracted.