ZCC error/exception when navigating in a contract on the tab Financial

When clicking in a contract on the tab Financial the following stack trace is  shown in the ZCC.log

20 Nov 2013 15:18:22 Exception occured
java.lang.ClassCastException: java.lang.Long cannot be cast to java.lang.Double
    at com.novell.zenworks.admin.pages.contracts.FinancialDetails.monthsBetween(FinancialDetails.java:272)
    at com.novell.zenworks.admin.pages.contracts.FinancialDetails.prerender(FinancialDetails.java:148)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2634)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.zenworks.fw.web.internal.layout.SnapshotTemplate.preRenderRecursiveInternal(SnapshotTemplate.java:460)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.WebControl.preRenderRecursiveInternal(WebControl.java:2645)
    at com.novell.web.controls.Page.internalProcessRequest(Page.java:739)
    at com.novell.web.controls.Page.processRequest(Page.java:668)
    at com.novell.zenworks.fw.web.internal.layout.Index.processRequest(Index.java:631)
    at com.novell.web.internal.controls.PageTag.doEndTag(PageTag.java:86)
    at org.apache.jsp.jsp.index_jsp._jspService(index_jsp.java:192)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:377)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:436)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:342)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:302)
    at com.novell.web.NJWCServlet.serviceImpl(NJWCServlet.java:97)
    at com.novell.zenworks.fw.web.internal.ZENworksServlet.service(ZENworksServlet.java:86)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.patchlink.sapphire.web.pages.vulnerability.session.HibernateSessionFilter.doFilter(HibernateSessionFilter.java:75)
    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.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:563)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at com.novell.zenworks.tomcat.ZENRequestValve.invoke(ZENRequestValve.java:1293)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:662)