An error message appears, if the user copying Workstation Setup files.

This error message occurs when installing/upgrading Fortis, and can be caused by a number of things listed below.

1. Corrupt Installation Media - Solution would be to download a fresh copy of the Fortis 2.x media that you need. 
2. Anti-Virus is blocking the installer from running correctly - Disable Ant-Virus
3. The HDD you have selected to install/upgrade on does not have enough room to install/upgrade Fortis
4. Verify the user you are logged into the current machine has permissions to the Install Media and the Fortis directories.