I have NTSC system and Injustice EUR freezes. server log attached. http://pastebin.com/YWk0Ma46
Also Mass Effect 3 EUR has 22MB RPX no RPL, data is 22GB I think.
Fifa 13 USA has 27MB RPX no rpl, I have exact sizes noted can update later.
COD Ghosts USA freezes before server picks it up. rpx is 5kb and 2 rpl files. Data is 15GB or so. Same experience with Deus Ex EUR (freeze at ssb intro), but didn't have server working. Will try again.
ESPN Sports Connect USA works fine.
Also 64GB sandisk works fine, just need to fat32format it.
Can you give the file list of the Localization folder?