LDAP Entry Reference doesn't Work

Dear LDAP Entry Reference developers

I'm trying to get the LDAP Entry Reference Module Running. But until now I had no success.
My configuration of the field is attached in the Screen shot.
When i started debugging the problem i found the error in den LDAP_Search string! The Module search my ldap groups in the way "Content type Name/Search input". In my Setup the Content Type is called "Gruppe" and my LDAP Group is called test1. In the Drupal Log file i can find the following LDAP Seachstring:

Ldap_search() call: base_dn: ou=groups,o=SpeicherBox,dc=speicherbox,dc=ch, filter = (cn=*gruppe/test1*), attributes: cn,dn, attrsonly = 0, sizelimit = 10, timelimit = 0, deref = , scope = 3

From my point of view, there should be no Content Type Name in the LDAP Searchstring. Something link this:

Ldap_search() call: base_dn: ou=groups,o=SpeicherBox,dc=speicherbox,dc=ch, filter = (cn=*test1*), attributes: cn,dn, attrsonly = 0, sizelimit = 10, timelimit = 0, deref = , scope = 3

Is there any way to fix this. Or could I change it by my self in the code or in the configuration?

I hope you can help me with my problem!

Tank your for your support!

Best Regards from Switzerland

Biohazard