Comment 4 for bug 570740

> Hmm, I noticed that the string in scour.inx is also not localized in my system.

Yes, you're right, it affects all character entities.
I've replaced the affected line directly in my fr.po file with: "Force Dimension must be set as \"<width>x<height>\"" and it works correctly. But since it's a manual workaround, it's not safe at all.

The problem with entities is that they are parsed before being compared to the translation file, and thus find no matching string. And the XML parser doesn't like it if we use < and > directly in the extension INX file...

Still investigating.