i asked the above question, i hope you can see my, Username, when an admin signs in and clicks 'edit profile' button on my user page, he ll get an error User Not Found, because of the nature of characters i have used in my username.
I have some editions to CSS and some code to allow some specific characters in the username at registration page, how do i keep track of those changes in the new release :s ??? and will the upgrade be smooth , like it wont disturb my earlier installation ?