I can't translate anything: A system error occurred. Part 2.

[traduccions catala]

Hi, again!
I'm translating some programs to catalan, but each time I pressed the
'save' button, I received the following error: 'A system error
occurred.'.

Any idea?

The link is:

https://launchpad.ubuntu.com/rosetta/products/xchat2/xchat-2.4.1/+translate?languages=ca

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