The url it's correct.. this is the Server Response Log which i receive:
[2006/07/10 17.25.11] Uploading to Primary URL...:
http://www.arthaslegacy.it/roster/admin/update.php
[2006/07/10 17.25.11] CharacterProfiler.lua - 85% Compressed. Upload Size: 47,79 KB
[2006/07/10 17.25.12] Upload Error: Errore del server remoto: (403) Non consentito.
I have enabled/disabled GZip compression, but same problem.
If i upload from website all works fine.
I have tried to CHMOD the admin directory to 777 but no luck.
Thank you for your support.