We recently upgradrd to V8.1 SP1, after upgrade none of the widgets are opening. We are getting following exception:
javax.servlet.jsp.JspTagException: At least one error was found but this tag is not reporting errors: An unexpected error occurred during the start of the taglib: null
at com.vignette.as.ui.common.taglib.VgnTagSupport.handleErrors(VgnTagSupport.java:140)
at com.vignette.as.ui.common.taglib.VgnTagSupport.doStartTag(VgnTagSupport.java:106)
at jsp_servlet._secure._ui._widgets.__widget_45_dialog._jspService(__widget_45_dialog.java:416)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:35)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:529)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1759)
at com.vignette.as.ui.common.action.VgnActionServlet.processActionForward(VgnActionServlet.java:203)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1599)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:494)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:821)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:529)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at org.apache.struts.action.ActionServlet.processActionForward(ActionServlet.java:1759)
at com.vignette.as.ui.common.action.VgnActionServlet.processActionForward(VgnActionServlet.java:203)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1599)
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:494)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:821)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.RequestDispatcherImpl.invokeServlet(RequestDispatcherImpl.java:529)
at weblogic.servlet.internal.RequestDispatcherImpl.forward(RequestDispatcherImpl.java:253)
at com.vignette.as.ui.common.util.ContextUtils.dispatch(ContextUtils.java:260)
at com.vignette.as.ui.common.taglib.VgnDispatchTag.doStartTag(VgnDispatchTag.java:125)
at jsp_servlet._secure._common._session.__dispatch._jspService(__dispatch.java:119)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:35)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:184)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3686)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
