well I used internet explorer , Crom and Mozilla and same result. I installed bonita bpm 7 in two pc which have windows 7 ultimate servis pack1 and UI designer works fine . Home edition which i use at work UI designer does not work. Probably the problem is not related with operating system but according to my observation I have noticed that. Example In the version 6 of Bonita, after execution of the model I am recieving eror not 404 but another when a user log off to log in for another user.
Regards