I´m surprised that nobody had this problem so far.
My Problem was that everytime i wanted to go on the WL-HDD via IE or the link in the Utility, the browser (IE) opened and then immediately closed.
After installing Firefox (which is not closing the window) i remembered that probably my google Pop-Up Blocker is responsible for this behaviour.
After disabling the Blocker it worked fine.
I hope that i´ll save some time for some people.

genious