I am experiencing difficulty logging in to administration. I enter username=admin, and my password, but the login screen simply refreshes.
If I try to enter anything different, the message 'No match for Username and/or Password.' appears, but when I enter my correct password, there is no error message - just returns to the login page. Any suggestions?
From what you describe, it sounds as you have Session issue on your server. Do you get any error or warnings in the logs?
It seems I left the debug at level #5 and the error file was over 1.75 GB. I deleted it, and my access to admin was restored. Thank you!