11
First of all breath...smile...
I do not have specific answers for you...but...
Ok...I can't look because your site now has an internal error.
Now i could be barking up the wrong tree but here are some suggestions for you to try if no-one else pops in with a specific answer or you are waiting for a helpful xoopser...
There is a troubelshooting FAQ
hereLook at getting to admin without login and see if that gets you into your site.
The check on the backup faq's.
if you get blank pages check the faq's on blank pages
I suggest you also establish a connection between you and your site via ftp (not c panel)and ensure all your files and folders are intact and have the correct read/write permissions...you didn't happen to delete mainfile.php? Is mainfile.php reading exactly as it should?
The FAQ section may be a good resource for you once you do establish a connection as admin
and yes...if all else fails use your backup...