how to ldap configration on koha. i try to configra ldap on koha like below but it give me the following fantal error. how I can correct it <useldapserver>1</useldapserver> <!-- LDAP SERVER (optional) --> <ldapserver id="idm"> <hostname>192.168.5.55</hostname> <base>dc=idmdomain,dc=edu</base> <user>cn=kohaadmin,ou=koha,dc=idmdomain,dc=edu</user> <!-- DN, if not anonymous --> <pass>adama</pass> <!-- password, if not anonymous --> <replicate>1</replicate> <!-- add new users from LDAP to Koha database --> <update>1</update> <!-- update existing users in Koha database --> <auth_by_bind>1</auth_by_bind> <!-- set to 1 to authenticate by binding instead of password comparison, e.g., to use Active Directory --> <principal_name>%s@my_domain.com</principal_name> <!-- optional, for auth_by_bind: a printf format to make userPrincipalName from koha userid --> <mapping> <!-- match koha SQL field names to your LDAP record field names --> <firstname is="givenname" ></firstname> <surname is="sn" ></surname> <address is="postaladdress" ></address> <city is="l" >Athens, OH</city> <zipcode is="postalcode" ></zipcode> <branchcode is="branch" >MAIN</branchcode> <userid is="uid" ></userid> <password is="userpassword" ></password> <email is="mail" ></email> <categorycode is="employeetype" >PT</categorycode> <phone is="telephonenumber"></phone> </mapping> </ldapserver> Koha error The following fatal error has occurred: No "ldapserver" in server hash from KOHA_CONF: /etc/koha/koha-conf.xml at /usr/share/koha/lib/C4/Auth_with_ldap.pm line 53. Compilation failed in require at /usr/share/koha/lib/C4/Auth.pm line 44, <DATA> line 275. BEGIN failed--compilation aborted at /usr/share/koha/lib/C4/Auth.pm line 47, <DATA> line 275. Compilation failed in require at /usr/share/koha/intranet/cgi-bin/mainpage.pl line 23, <DATA> line 275. BEGIN failed--compilation aborted at /usr/share/koha/intranet/cgi-bin/mainpage.pl line 23, <DATA> line 275. Apache Server version: Apache/2.2.14 (Ubuntu) Server built: Apr 13 2010 19:28:27 Koha 3.00.06.010 Koha DB 3.0006010 MySQL mysql Ver 14.14 Distrib 5.1.41, for debian-linux-gnu (i486) using readline 6.1 OS Linux tibabu-desktop 2.6.32-22-generic-pae #33-Ubuntu SMP Wed Apr 28 14:57:29 UTC 2010 i686 Perl 5.010001