Change those two lines to look like this and it should work:
Code:
<de customname="1" />
<!-- <pl customname="0" />-->
But I can't actually say whether the German translation is actually current /any good.
I'm guessing Polish is commented out because it was either dropped or never implemented.
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Looking through the Config file, I see a character listed that I've never heard of: Ikue.
There's no files, events or scenes for her so I'm guessing that she's a planned character or one that got scrapped fairly early on.