How can u reset admin password , if you get the following problem while resetting the password via mail?
I can't get the solution from google. But some tricks solves my problem.
APPLICATION ERROR #1901
The confirmation URL is invalid or has already been used. Please signup again.
Please use the "Back" button in your web browser to return to the previous page. There you can correct whatever problems were
identified in this error or select another action. You can also click an option from the menu bar to go directly to a new section.
1.) If you know ,normal user login and password ... get login
2.) Then open ... mantis_user_table table from the mantis database.
3.) Then copy the password and cookie_string values from normal user to admin user.
Before that u should change the cookie_string value for normal user. Otherwise it will show unique id problem.
4.) Then save everything and refresh browser ( where we logged in as normal user), Now u can get admin login. ;-)