I'm playing the same version as you, while I wait for my original to arrive from play-Asia. I've experienced no problems with the game. I'm running it for an external drive as well. Make sure you drive is powered externally, and if you copy and and delete games from the drive a lot, you might want to look at defraging it. the error you are getting is just to check the HDD for file corruption, because you unplugged the console. you can ignore it if you like, but it only takes a few minutes to run. BTW, I'm running the same 4.30CFW as you. Hope this helps.