Need a bugfix with some locales Rated 5 out of 5 stars

Very useful addon, but with recent versions of firefox, a bug regarding the option dialog appears.
The dialog opens, but the only content is an error report.
Here is the content, in Italian language:
Errore interpretazione XML: entità non definita
Indirizzo: chrome://lget/content/options.xul
Linea numero 35, colonna 1:
<dialog id="lget-options-dialog"
^

EDIT:
It seems the options.xul file can't find entities defined in locale file options.dtd. Could you fix the problem?

RE-EDIT:
The problem was due to the inability to read accented characters in the dtd file.

Problem solved converting the dtd file in UTF-8 encoding
All Italian users (and all users with accented characters in their localization) can easily fix the extension opening the xpi file with a zip manager (I used 7zip) and converting the file in UTF-8 with an advanced text editor (I used notepad2).