Fatal error: Call to a member function fetch_row() on a non-object in C:\xampp\htdocs\devel\adminer\www\index.php on line 323
after searching 2 czech words with diacritic from general seach form
It happens when you use non-utf8 collations in the table.
Thank you for the report, I've fixed it in Git. You can download the "Current development version" from http://www.adminer.org/#download