Have you tried setting a seperate boot on your PC with an operating system it will cooperate with?
I haven't tried that. I'm struggling to even find a version of the client I can actually install. There seems to be issues with connecting to a network when
Im running the installer
Defeat 50,000 enemies. - KINGDOM HEARTS Melody of Memory
Play the same Music Stage 10 times. - KINGDOM HEARTS Melody of Memory
Collect 50,000 Rhythm Points. - KINGDOM HEARTS Melody of Memory