New Errors

So I’ve been running WP for over 2 years now, everyhting is updated and has been running fine for months, now I get this error today on my sites main page:

Warning: Unexpected character in input: ‘\’ (ASCII=92) state=1 in /home/angela/public_html/wp-content/plugins/comment_quicktags.php on line 68

Parse error: parse error, unexpected T_LNUMBER in /home/angela/public_html/wp-content/plugins/comment_quicktags.php on line 68

Can anyone tell me whats going on? I can’t even login to WP :-/.

My url is: http://radkitten.nu