Best posts made by JC_Denton89
It's a bug with a windows feature called 'storage spaces' Right now the workaround is to move the game to your main OS drive or another drive that isn't managed with windows storage spaces. Originally I had this problem with it was installed on SSDs running under a RAID configuration that was managed with windows storage spaces but moving it to my main SSD allowed it to launch.
You can also move the .PCK files to a different drive and create links to them in the actual game folder. Read this thread for instructions