Originally Posted by
Kojichan This is going to sound really stupid, but you can't run the game from the folder directly, if the ISO isn't mounted. That means, if the ISO isn't mounted, you cannot click on "MainSystem.exe" to get it to work. BUT, for some strange reason if you make a shortcut that links to MainSystem.exe, put that on your desktop, and THEN click on it, it doesn't need to have the ISO mounted.
So, two choices:
#1, Mount ISO to play
#2, (Possibly) Create shortcut on desktop, then use that instead.