Warning: mysql_real_escape_string()

I can get the first list, but when I click Searh I get this failure - and a lot more:

I bought the Component yesterday (This email address is being protected from spambots. You need JavaScript enabled to view it.)

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (13) in /home/f/r/sv_frobjergdk/components/com_grid/GridBuilder.php on line 117

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: A link to the server could not be established in /home/f/r/sv_frobjergdk/components/com_grid/GridBuilder.php on line 117

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (13) in /home/f/r/sv_frobjergdk/components/com_grid/GridBuilder.php on line 123

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: A link to the server could not be established in /home/f/r/sv_frobjergdk/components/com_grid/GridBuilder.php on line 123

Warning: mysql_real_escape_string() [function.mysql-real-escape-string]: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (13) in /home/f/r/sv_frobjergdk/components/com_grid/GridBuilder.php on line 126

It was a wrong dataconnection