Problem with start letter based quick select of contacts using LDAP

Hi, I have a problem with letter-based quick start of the select contacts using LDAP.

I configured the ldap-contacts module to access the shared address book (GAL) on my Windows 2000 Active Directory via LDAP.

Everything works properly with exception of the search for "letter based quick start select" (the letter visible on the vertical-bar of contacts).

When I click on any letter to filter the list of the addresses I receive the following error message:

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Syntax Error in server response (10-13-2011 12:01 PM): "Unexpected token <"

URL: / ajax / multiples? A50026fb7e284280be5873beb7817932 session = & continue = true

Date:

Response: return <! DOCTYPE HTML PUBLIC "- / / IETF / / DTD HTML 2.0 / / EN">
<html> <head>
<title> 500 Internal Server Error </ title>
</ Head> <body>
<h1> 500 Internal Server Error </ h1>
<p> [no description available] </ p>
<hr>
<address> Thu, 13 October 2011 12:01:58 GMT Open-Xchange v6.20.0-Rev29 </ address>
</ Body> </ html >[{}]
------------------------------------------

in / var/log/open-xchange/open-xchange.log.0 I find this:

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13-Oct-2011 14:12:21 com.openexchange.log.internal.LoggerTask call
INFO: Logged at: com.openexchange.ajp13.servlet.ServletContextWrapp er.log (ServletContextWrapper.java: 265)
Multiple: Error while writing the response object.
com.openexchange.session.contextId = 1
com.openexchange.session.userId = 3
java.lang.UnsupportedOperationException
at
at
at com.openexchange.ajax.request.ContactRequest.actio nTermSearch (ContactRequest.java: 761)
at com.openexchange.ajax.request.ContactRequest.actio n (ContactRequest.java: 199)
at
at
at com.openexchange.ajax.Multiple.doAction (Multiple.java: 216)
at com.openexchange.ajax.Multiple.parseActionElement (Multiple.java: 175)
at com.openexchange.ajax.Multiple.doPut (Multiple.java: 124)
at javax.servlet.http.HttpServlet.service (HttpServlet.java: 730)
at com.openexchange.ajax.AJAXServlet.service (AJAXServlet.java: 417)
at com.openexchange.ajax.SessionServlet.service (SessionServlet.java: 244)
at javax.servlet.http.HttpServlet.service (HttpServlet.java: 820)
at com.openexchange.ajp13.coyote.AjpProcessor.process (AjpProcessor.java: 793)
at com.openexchange.ajp13.coyote.sockethandler.Coyote Task.call (CoyoteTask.java: 165)
at java.util.concurrent.FutureTask $ Sync.innerRun (FutureTask.java: 303)
at java.util.concurrent.FutureTask.run (FutureTask.java: 138)
at
at
at java.lang.Thread.run (Thread.java: 662)
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I'm using this repository "/ OX6/snapshot/DebianSqueeze" and the latest available versions of the programs installed on October 13, 2011.

Any suggestion is welcome, thank you.

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Problem with start letter based quick select of contacts using LDAP