I can try to find some existing ones for both languages. Localized error
messages can be quite amusing since the terminology may not be properly
established in the target language and the translations are often done
by writers who don't grasp the tech at that level of detail.

I don't like localized error messages for another reason. When you
don't know what to do with the error message (say, a compiler warning)
and you search the web for it, it works best if everyone uses the same
search term and not some localized version. :)