Upgrad to 5, somer templates are not compatibel

Hello, I try to upgrade to Version 5 (from 4.4-errata1150), but it fails with:

python_ucr_template_compatibility:                                                                                                      
The following UCR templates are not compatible with Python 3:                                                                           
         /etc/univention/templates/files/etc/ldap/slapd.conf.d/66oxforucs.acl                                                           
See <https://help.univention.com/t/17948> for information on how to proceed with each template.                                         
         /etc/univention/templates/files/etc/ldap/slapd.conf.d/20univention-kolab_schema (package: univention-legacy-kolab-schema)      
See <https://help.univention.com/t/17948> for information on how to proceed with each template.                                         
         /etc/univention/templates/files/usr/share/univention-management-console/www/config.php (package: univention-management-console)
See <https://help.univention.com/t/17948> for information on how to proceed with each template. 

I already read the article UCS 5.0 upgrade failed: solve pre-update check python-ucr-template-compatibility , but these files are not listed there. Also the updater said we’ve a kolab-ldap schema installed be never used this?!

Here is the rest of the error.log:

kolab_schema:                                                                                                                                                 
 The package univention-legacy-kolab-schema is installed. This package is                                                                                     
 incompatible with UCS 5.0-0.                                                                                                                                 
                                                                                                                                                              
 As the package contains a LDAP schema extension, this extension (a) has to                                                                                   
 registered in the LDAP database or (b) has to be removed before the update                                                                                   
 to UCS 5.0 is possible.                                                                                                                                      
                                                                                                                                                              
 Note: These steps are only required on the Primary Node. On non-primary systems,                                                                             
       the package can be removed without step (a) or (b).                                                                                                    
                                                                                                                                                              
 (a) Register LDAP schema files from univention-legacy-kolab-schema:                                                                                          
     To register the LDAP schema, run the following commands:                                                                                                 
     cat /usr/share/univention-ldap/schema/legacy/rfc2739.schema > /opt/kolab-legacy.schema                                                                   
     cat /usr/share/univention-ldap/schema/legacy/kolab2.schema >> /opt/kolab-legacy.schema                                                                   
     cat /usr/share/univention-ldap/schema/legacy/univention-kolab2.schema >> /opt/kolab-legacy.schema                                                        
     cat /usr/share/univention-ldap/schema/legacy/kolab-legacy.schema >> /opt/kolab-legacy.schema                                                             
     bash -c 'source /usr/share/univention-lib/ldap.sh && ucs_registerLDAPExtension --packagename "univention-legacy-kolab-schema" --packageversion "3.0.0-1.2
2.201309110849" --schema /opt/kolab-legacy.schema'                                                                                                            
                                                                                                                                                              
 or (b) Remove the LDAP schema extension:                                                                                                                     
        Please visit https://help.univention.com/t/6443 for how to remove LDAP schema extensions                                                              
        (remove all attributes and objectclasses from that schema from the LDAP database).                                                                    
                                                                                                                                                              
 After either (a) or (b) has been completed, the package has to be removed from this server:                                                                  
  univention-remove --purge univention-legacy-kolab-schema                                                                                                    
                                                                                                                                                              
minimum_ucs_version_of_all_systems_in_domain:                                                                                                                 
The following extensions are incompatible with UCS 5.0:                                                                                                       
        cn=66oxforucs,cn=ldapacl,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                                
        cn=50_ox,cn=udm_syntax,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                                  
        cn=oxAccess,cn=udm_hook,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                                 
        cn=oxGroupHook,cn=udm_hook,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                              
        cn=oxmail/oxcontext,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                       
        cn=oxmail/oxdomain,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                        
        cn=oxmail/oxfetchmailmulti,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                
        cn=oxmail/oxfetchmailsingle,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                               
        cn=oxmail/oxfolder,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                        
        cn=oxmail/oxlists,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                         
        cn=oxmail/oxmail,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                          
        cn=oxresources/oxresources,cn=udm_module,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                
        cn=oxUserDefaults,cn=udm_hook,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)                                                           
        cn=oxContextRW,cn=udm_hook,cn=univention,dc=aei,dc=mpg,dc=de: [unspecified..unspecified)  

thanks in advanced!