I haven't made any changes but to images on this site I have been working on for a client. It worked fine last night getting into the admin page.
Now, I log into the admin page and it just refreshes. I am placing in the correct username and password. And it shows no error and after awhile tells me my session I have been logged out but I cannot get into the administration area of the Joomla. Please help! Desperate to fix this to get the site updated.
While waiting for a response here you may want to search or post on joomla.org as this is not RT template related...
You may want to revert to your latest backup, if you don't have one, you could check with your host, most back up your site / DB every 24hrs and keep them for 3 days or so.
For future reference, this extension is a life saver: