Documentum Webtop 6.7 JSP compilation issue

Issue

• We are using Documentum tag libraries in our JSPs and receiving the following errors:

  ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
  org.apache.jasper.JasperException: Unable to compile class for JSP: 
  
  An error occurred at line: 3 in the jsp file: /wdk/tagPoolingDetector.jsp
  com.documentum.web.form.control cannot be resolved to a type
  1: <%@ page contentType="text/html; charset=UTF-8" %>
  2: <%@ taglib uri="/WEB-INF/tlds/dmform_1_0.tld" prefix="dmf" %>
  3: <dmf:tagpooldetector value="a"/>
  4: <dmf:tagpooldetector value="b"/>
  

• In the server.log we see the following root exception associated with the JSP errors:

  Stacktrace:
       at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92)
       at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
       at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:439)
       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:335)
       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:313)
       at org.apache.jasper.compiler.Compiler.compile(Compiler.java:300)
  ...
  ERROR [[ComponentDispatcher]] Servlet.service() for servlet ComponentDispatcher threw exception
  java.lang.NoSuchMethodError: com.documentum.fc.client.IDfClient.getLicenseManager()Lcom/documentum/fc/client/license/ILicenseManager;
      at com.documentum.web.formext.session.AuthenticationService.initLicenseManager(AuthenticationService.java:159)
      at com.documentum.web.formext.session.AuthenticationService.getService(AuthenticationService.java:119)
      at com.documentum.web.formext.component.ComponentDispatcher.createComponentDef(ComponentDispatcher.java:528)
      at com.documentum.web.formext.component.ComponentDispatcher.mapRequestToComponent(ComponentDispatcher.java:447)
      at com.documentum.web.formext.component.ComponentDispatcher.doGet(ComponentDispatcher.java:321)