Cannot make a personalized exception

[Vermi]

I'm trying to make a custom Exception class with this :


class MyException : Exception
{
    static char[] s = "My Exception";
    this()
    {
			super(s);
    }

    char[] toString()
    {
				return s;
    }
}

it compile well, until I want to throw it :/
When I put the line : 

throw new MyException();

I get that error :
webcache.obj(webcache)
 Error 42: Symbol Undefined _D4util10linkedlist13TestException7__ClassZ
webcache.obj(webcache)
 Error 42: Symbol Undefined _D4util10linkedlist13TestException5_ctorMFAaZC4util10linkedlist13TestException
--- errorlevel 2



The two class ( Exception and thrower class ) are in the same file. I tried Copy / Past examples from the site, but it still donc work. An idea ?