If you get an "Unidentified Developer" or other Security Issue when trying to run the installer, please do the following:
1) Open the Downloads folder in Finder.
2) Find the MediaShout 6 for Mac install file.
3) Hold CONTROL and left-click on the file.
4) From the sub-menu, click OPEN.
5) In the security box that appears, click OPEN again.
That will begin the installation and you will be all set.