[mikebzh44]

Error is due to accented characters in French :

Code:

<string id="30301">Téléchargement de la première image de l'artiste</string>

No error with

Code:

<string id="30301">Telechargement de la premiere image de l'artiste</string>

Because of accented characters, you need to UTF8 encode strings :

Code:

xbmc.executebuiltin('XBMC.Notification("' + __language__(30300).encode("utf8") + '", "' + __language__(30301).encode("utf8") + '", 10000, ' + __addonicon__ + ')')