converting schemas

Hi folks!

I need to upgrade my LDAP server 2.2 to 2.4 and I'm trying to convert the schemas file with slaptest . But when I run the command bellow I get the follow message. And some schema files aren't converted.

# slaptest -f schema.conf -F /tmp/ldap/slapd/

51c0725d config_build_attrs: error 21 on olcAttributeTypes value #10 51c0725d config_build_entry: build "cn={7}phpgwaccount" failed: "" 51c0725d backend_startup_one (type=config, suffix="cn=config"): bi_db_open failed! (-1) slap_startup failed (test would succeed using the -u switch)

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