No Ivan, the applications are not in one. They are on the same development PC. It does not matter though, as I wiped out all the cookies and then it works OK.
I am desperately awaiting something on this pos: http://www.sitefinity.com/devnet/forums/sitefinity-4-x/general-discussions/newsletter-enhancements-in-q1-2011.aspx
I am very worried about it. I have restored the database to an earlier point and still shows the error. I am trying to create a new application and link it to the existing database, but it says that there is an administrator already and does not allow me to do anything.
What a nightmare i am going through with Sitefinity at the moment.
Hope you can help me rather quickly,