Error on site

Topics: Developer Forum, User Forum
Mar 13, 2013 at 12:30 PM
Suddenly the site won't show - maybe the editor of the site has set another page wrongful at start page or anything like that --- I can't login and in the error log I see this:

System.Web.HttpUnhandledException'. ---> System.ArgumentException: ' ', hexadecimale value 0x0C

what has gone wrong ?