Unable to initialize TldLocationsCache: zip file closed

[A Yates]

I have installed Tomcat 5 and am trying to use it with a Struts 1.1 application. Everytime it tries to load a JSP with a taglib directive it throws the error below. I have tried debugging this error and have seen that it is complaining about the xercesImpl.jar file that came with Tomcat. Does anyone know how to get past this problem?
Thanks.
Anna
org.apache.jasper.JasperException: Unable to initialize TldLocationsCache: zip file closed
at org.apache.jasper.compiler.TldLocationsCache.init(TldLocationsCache.java:210)
at org.apache.jasper.compiler.TldLocationsCache.getLocation(TldLocationsCache.java:181)
at org.apache.jasper.JspCompilationContext.getTldLocation(JspCompilationContext.java:516)
at org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:457)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:523)
at org.apache.jasper.compiler.Parser.parseElements(Parser.java:1577)
at org.apache.jasper.compiler.Parser.parse(Parser.java:171)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:247)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:149)
at org.apache.jasper.compiler.ParserController.parse(ParserController.java:135)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:237)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:456)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:552)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:291)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:301)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:248)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:284)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:204)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:742)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:506)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:443)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:359)
at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1069)
at org.apache.struts.action.RequestProcessor.processForwardConfig(RequestProcessor.java:455)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:279)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)