Unable to run report

Dear support,

I just purchased ServiceDesk Plus and I got following error message in new version 5.5.0

Please help.

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

javax.servlet.ServletException: Unknown table name specified ReportScheduleTask
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.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
com.adventnet.servicedesk.filter.EncodingFilter.doFilter(EncodingFilter.java:66)
com.adventnet.authentication.ContextChangeDetector.doFilter(ContextChangeDetector.java:100)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

root cause

java.lang.IllegalArgumentException: Unknown table name specified ReportScheduleTask
com.adventnet.ds.query.util.QueryUtil.setType(QueryUtil.java:896)
com.adventnet.ds.query.util.QueryUtil.setDataType(QueryUtil.java:837)
com.adventnet.db.api.RelationalAPI.setDataType(RelationalAPI.java:915)
com.adventnet.db.api.RelationalAPI.executeQuery(RelationalAPI.java:745)
com.adventnet.servicedesk.helpdesk.reports.utils.ReportUtil.getReportFolderDetails(ReportUtil.java:255)
com.adventnet.servicedesk.reports.helpdesk.ReportHomeAction.execute(ReportHomeAction.java:85)
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.doGet(ActionServlet.java:507)
javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
com.adventnet.servicedesk.filter.EncodingFilter.doFilter(EncodingFilter.java:66)
com.adventnet.authentication.ContextChangeDetector.doFilter(ContextChangeDetector.java:100)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75)

note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.