slurpd cannot replicate database

[Ludovico Basili <ludovico_basili@alliedtelesyn.com>]

Hello,
I am using openldap-2.2.17.
I cannot perform replication between two servers using slurpd.
I obtain an "object class violation" error, and if I disable
schemacheck, a "Type or value exists" error.
This is the ztc6:389.rej file (ztc6 is my backup server), with
schemacheck enabled:

ERROR: Object class violation: entry has multiple objectClass attributes
replica: ztc6:389
time: 1096641903.0
dn: ou=tttt,cn=ztcroot
changetype: add
ou: tttt
objectClass: organizationalUnit
objectClass: top
structuralObjectClass: organizationalUnit
entryUUID: 394cdb74-a804-1028-9238-b6da21255ac6
creatorsName: cn=manager,cn=ztcroot
createTimestamp: 20041001144503Z
entryCSN: 20041001144503Z#000001#00#000000
modifiersName: cn=manager,cn=ztcroot
modifyTimestamp: 20041001144503Z

This is the <myhost>:389.rej file, with schemacheck disabled:

ERROR: Type or value exists: attribute 'objectClass' provided more than
once
replica: ztc6:389
time: 1096642560.0
dn: ou=aaaaa,cn=ztcroot
changetype: add
ou: aaaaa
objectClass: organizationalUnit
objectClass: top
entryUUID: c073998e-a805-1028-80ea-d5ca15552c7e
creatorsName: cn=manager,cn=ztcroot
createTimestamp: 20041001145600Z
entryCSN: 20041001145600Z#000001#00#000000
modifiersName: cn=manager,cn=ztcroot
modifyTimestamp: 20041001145600Z

any hint ?

Thanks in advance,
-- 
L