Notes about the PKG file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries
, unused processes and other unfavourable system settings to identify slowdown issues.
The PKG file type is primarily associated with 'OS X' by Apple Inc.. This file is generally an installer script and used by multiple programs. It is handled by the OS X operating system directly. This is likely an update to the original NeXT Installer Package listing.