Первую ошибку исправил, теперь появилась вторая.
не получается сохранить детализацию в CSV,HTML,CSV/ZIP,HTML/ZIP, 
т.е. отчет вроди сохраняються, но пустой и размер у файла 0.
Вот лог ошибки сервера:
Код:
server 01-14/07:29:21 ERROR [http-8080-3] XSLManager - Error XSLT file phone_login_service_sessions_csv.xsl
java.lang.NullPointerException
   at org.apache.xalan.transformer.TransformerImpl.setOutputProperty(TransformerImpl.java:966)
   at bitel.billing.server.XSLManager.newTransformer(XSLManager.java:70)
   at bitel.billing.server.XSLManager.getTransformer(XSLManager.java:92)
   at bitel.billing.server.XSLManager.transform(XSLManager.java:147)
   at bitel.billing.server.phone.WebAction_ReportServiceSession.doAction(WebAction_ReportServiceSession.java:130)
   at bitel.billing.server.phone.WebAction_ReportSession.doAction(WebAction_ReportSession.java:117)
   at bitel.billing.server.WebExecuter.executeAction(WebExecuter.java:400)
   at bitel.billing.server.WebExecuter.doPost(WebExecuter.java:183)
   at bitel.billing.server.WebExecuter.doGet(WebExecuter.java:86)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:595)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at ru.bitel.server.servlet.filters.MultipartFilter.doFilter(MultipartFilter.java:42)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at ru.bitel.server.servlet.filters.XSSFilter.doFilter(XSSFilter.java:87)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at bitel.billing.server.filters.BGAuthFilter.doFilter(BGAuthFilter.java:232)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at bitel.billing.server.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:37)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
   at java.lang.Thread.run(Thread.java:619)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream - java.lang.NullPointerException
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at java.lang.String.getBytes(String.java:946)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.XSLManager.transform(XSLManager.java:179)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.phone.WebAction_ReportServiceSession.doAction(WebAction_ReportServiceSession.java:130)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.phone.WebAction_ReportSession.doAction(WebAction_ReportSession.java:117)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.WebExecuter.executeAction(WebExecuter.java:400)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.WebExecuter.doPost(WebExecuter.java:183)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.WebExecuter.doGet(WebExecuter.java:86)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at javax.servlet.http.HttpServlet.service(HttpServlet.java:595)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at ru.bitel.server.servlet.filters.MultipartFilter.doFilter(MultipartFilter.java:42)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at ru.bitel.server.servlet.filters.XSSFilter.doFilter(XSSFilter.java:87)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.filters.BGAuthFilter.doFilter(BGAuthFilter.java:232)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at bitel.billing.server.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:37)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
server 01-14/07:29:21 ERROR [http-8080-3] LoggingPrintStream -    at java.lang.Thread.run(Thread.java:619)
server 01-14/07:29:24 ERROR [http-8080-2] XSLManager - Error XSLT file phone_login_service_sessions.xsl
java.lang.NullPointerException
   at org.apache.xalan.transformer.TransformerImpl.setOutputProperty(TransformerImpl.java:966)
   at bitel.billing.server.XSLManager.newTransformer(XSLManager.java:70)
   at bitel.billing.server.XSLManager.getTransformer(XSLManager.java:92)
   at bitel.billing.server.XSLManager.transform(XSLManager.java:147)
   at bitel.billing.server.phone.WebAction_ReportServiceSession.doAction(WebAction_ReportServiceSession.java:130)
   at bitel.billing.server.phone.WebAction_ReportSession.doAction(WebAction_ReportSession.java:117)
   at bitel.billing.server.WebExecuter.executeAction(WebExecuter.java:400)
   at bitel.billing.server.WebExecuter.doPost(WebExecuter.java:183)
   at bitel.billing.server.WebExecuter.doGet(WebExecuter.java:86)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:595)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at ru.bitel.server.servlet.filters.MultipartFilter.doFilter(MultipartFilter.java:42)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at ru.bitel.server.servlet.filters.XSSFilter.doFilter(XSSFilter.java:87)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at bitel.billing.server.filters.BGAuthFilter.doFilter(BGAuthFilter.java:232)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at bitel.billing.server.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:37)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
   at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
   at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
   at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
   at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
   at java.lang.Thread.run(Thread.java:619)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream - java.lang.NullPointerException
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at java.lang.String.getBytes(String.java:946)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.XSLManager.transform(XSLManager.java:179)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.phone.WebAction_ReportServiceSession.doAction(WebAction_ReportServiceSession.java:130)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.phone.WebAction_ReportSession.doAction(WebAction_ReportSession.java:117)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.WebExecuter.executeAction(WebExecuter.java:400)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.WebExecuter.doPost(WebExecuter.java:183)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.WebExecuter.doGet(WebExecuter.java:86)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at javax.servlet.http.HttpServlet.service(HttpServlet.java:595)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at javax.servlet.http.HttpServlet.service(HttpServlet.java:688)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at ru.bitel.server.servlet.filters.MultipartFilter.doFilter(MultipartFilter.java:42)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at ru.bitel.server.servlet.filters.XSSFilter.doFilter(XSSFilter.java:87)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.filters.BGAuthFilter.doFilter(BGAuthFilter.java:232)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at bitel.billing.server.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:37)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
server 01-14/07:29:24 ERROR [http-8080-2] LoggingPrintStream -    at java.lang.Thread.run(Thread.java:619)
обновления последнее было 13.01.2010
версия биллинга 4.6