Active Directory: Import Single User error

Hi guys, ServiceDesk Plus Standard Edition 9.0 9035, if i try to import a single user from Active Directory i obtain this error:

HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception

         javax.servlet.ServletException
         org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:545)
         org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:486)
         org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
         org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
         org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
         javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
         javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         com.manageengine.servicedesk.common.filter.ResetThreadLocal.doFilter(ResetThreadLocal.java:26)
         com.adventnet.servicedesk.filter.EncodingFilter.doFilter(EncodingFilter.java:201)
         org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:350)
         com.adventnet.servicedesk.authentication.NTLMV2CredentialAssociationFilter.doFilter(NTLMV2CredentialAssociationFilter.java:34)
         com.adventnet.servicedesk.authentication.NTLMV2Filter.doFilter(NTLMV2Filter.java:178)
         com.adventnet.console.filter.IT360Filter.doFilter(IT360Filter.java:133)
         com.adventnet.console.agent.ConsoleFilter.doFilter(ConsoleFilter.java:371)
         org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

root cause

         java.lang.NullPointerException
         com.adventnet.servicedesk.setup.util.ADImporter.<init>(ADImporter.java:94)
         com.adventnet.servicedesk.setup.action.ImportADUserAction.execute(ImportADUserAction.java:172)
         org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
         org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
         org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
         org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
         javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
         javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
         com.manageengine.servicedesk.common.filter.ResetThreadLocal.doFilter(ResetThreadLocal.java:26)
         com.adventnet.servicedesk.filter.EncodingFilter.doFilter(EncodingFilter.java:201)
         org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:350)
         com.adventnet.servicedesk.authentication.NTLMV2CredentialAssociationFilter.doFilter(NTLMV2CredentialAssociationFilter.java:34)
         com.adventnet.servicedesk.authentication.NTLMV2Filter.doFilter(NTLMV2Filter.java:178)
         com.adventnet.console.filter.IT360Filter.doFilter(IT360Filter.java:133)
         com.adventnet.console.agent.ConsoleFilter.doFilter(ConsoleFilter.java:371)
         org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

I have the same error on another installation of SDP (9032), is maybe a bug?

Thanks in advance.