I have been having great success using DiskSpan GUI and the Installer Script example that comes with it here
https://www.fileforums.com/showthread.php?t=104507
However, I have recently come across a game that has an extremely long path name that almost exceeds 260 characters in length (245), which heavily limits where it can be installed, because the installer errors out when trying to write to a path that exceeds 260 characters in length. It will install without error when the installation path is less than 15 characters (260-245)
Does anyone know what steps I should take to avoid the problem? I am very new to this, thanks!