Hello, Simone.
Could you please take a screenshot of the browser with error message, and browser address bar so we could see which hostname was requested, and attach it to your reply?
Also, if you have Fiddler installed, please export the request/response session(s) and either attach them or
send them to us privately. Fiddler traces are the best bet regarding quick diagnoses of issues of this sort.
And thank you again for using our product.
Best regards,
UltiDev Team.
Please donate at
http://www.ultidev.com/products/Donate.aspx to help us improve our products.