Error when using Personal sites app

As admin user I have created a new role with this name: "My Web Master", and assigned the required permissions according to the documentation.

Then as admin user I created an user "lrapps", and assigned that user the new role. Then as admin I create a new page and added the "Micro sites" app to that page. As admin user I clicked the "+ Add" icon, it didn't do anything and displayed this: " Micro Site is temporarily unavailable. "

Then I logged out and logged in as the "lrapps" user (which has the required role), and tried to create a new site, but got the same message " Micro Site is temporarily unavailable. "

In the log I can see this error:
21:46:25,369 ERROR [http-bio-8080-exec-118][render_portlet_jsp:132] null
org.apache.jasper.JasperException: Unable to compile class for JSP: __An error occurred at line: [14] in the generated java file: [/devm/liferay-portal-6.2.0-ce-ga1/tomcat-7.0.42/work/Catalina/localhost/micro-site-portlet/org/apache/jsp/html/microsite/edit_jsp.java]_Only a type can be imported. com.sun.tools.jdi.LongValueImpl resolves to a package__Stacktrace: [Sanitized]
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilterChain.doFilter(InvokerFilterChain.java:116)
at com.liferay.portal.kernel.servlet.filters.invoker.InvokerFilter.doFilter(InvokerFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:605)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:544)
Jul 09, 2014 9:46:59 PM org.apache.catalina.core.ApplicationDispatcher invoke
SEVERE: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: Unable to compile class for JSP:

An error occurred at line: [14] in the generated java file: [/devm/liferay-portal-6.2.0-ce-ga1/tomcat-7.0.42/work/Catalina/localhost/micro-site-portlet/org/apache/jsp/html/microsite/edit_jsp.java]
Only a type can be imported. com.sun.tools.jdi.LongValueImpl resolves to a package

Stacktrace:
at org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:103)
at org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:366)
at org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:468)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:378)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:353)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:340)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:646)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:357)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)