Erro por causa de TagLibs?

[RodReis]

Quando rodo no tomcat da este erro

Exception report

message

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

exception

javax.servlet.ServletException:
javax/servlet/jsp/tagext/TagLibraryValidator
org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:244)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

java.lang.NoClassDefFoundError:
javax/servlet/jsp/tagext/TagLibraryValidator
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(Unknown Source)
java.security.SecureClassLoader.defineClass(Unknown Source)
java.net.URLClassLoader.defineClass(Unknown Source)
java.net.URLClassLoader.access$100(Unknown Source)
java.net.URLClassLoader$1.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(Unknown Source)
java.lang.ClassLoader.loadClass(Unknown Source)
java.lang.ClassLoader.loadClass(Unknown Source)
java.lang.ClassLoader.loadClassInternal(Unknown Source)
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(Unknown Source)
java.security.SecureClassLoader.defineClass(Unknown Source)
java.net.URLClassLoader.defineClass(Unknown Source)
java.net.URLClassLoader.access$100(Unknown Source)
java.net.URLClassLoader$1.run(Unknown Source)
java.security.AccessController.doPrivileged(Native Method)
java.net.URLClassLoader.findClass(Unknown Source)
java.lang.ClassLoader.loadClass(Unknown Source)
java.lang.ClassLoader.loadClass(Unknown Source)
sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
java.lang.ClassLoader.loadClass(Unknown Source)
org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1255)
org.apache.catalina.loader.WebappClassLoader.loadClass
(WebappClassLoader.java:1189)
org.apache.jasper.compiler.TagLibraryInfoImpl.createValidator
(TagLibraryInfoImpl.java:645)
org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD
(TagLibraryInfoImpl.java:246)
org.apache.jasper.compiler.TagLibraryInfoImpl.<init>
(TagLibraryInfoImpl.java:179)
org.apache.jasper.compiler.Parser.parseTaglibDirective
(Parser.java:418)
org.apache.jasper.compiler.Parser.parseDirective
(Parser.java:483)
org.apache.jasper.compiler.Parser.parseElements
(Parser.java:1539)
org.apache.jasper.compiler.Parser.parse(Parser.java:126)
org.apache.jasper.compiler.ParserController.doParse
(ParserController.java:220)
org.apache.jasper.compiler.ParserController.parse
(ParserController.java:101)
org.apache.jasper.compiler.Compiler.generateJava
(Compiler.java:203)
org.apache.jasper.compiler.Compiler.compile
(Compiler.java:490)
org.apache.jasper.compiler.Compiler.compile
(Compiler.java:471)
org.apache.jasper.compiler.Compiler.compile
(Compiler.java:459)
org.apache.jasper.JspCompilationContext.compile
(JspCompilationContext.java:511)
org.apache.jasper.servlet.JspServletWrapper.service
(JspServletWrapper.java:295)
org.apache.jasper.servlet.JspServlet.serviceJspFile
(JspServlet.java:292)
org.apache.jasper.servlet.JspServlet.service
(JspServlet.java:236)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

note The full stack trace of the root cause is available in the
Apache Tomcat/5.0.29 logs.

[volnei]

A classe javax/servlet/jsp/tagext/TagLibraryValidator não está no seu classpath.