[JBoss-user] [JBoss Portal] - wiki portlet attachments

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I am using the wiki portlet from http://www.portletswap.com. I am using JBoss Portal v 2.0.1RC1 with MySQL database. 

I have 2 questions:

1. When I tried adding an attachment, I get the following error:

11:35:03,041 INFO  [[/wiki]] serverFileName : C:\DOCUME~1\abc\LOCALS~1\Temp\/file_up-portlet.tmp filename: C:\Documents and Settings\abc\My Documents\3_eeApp.pdf
11:35:03,041 INFO  [STDOUT] Cannot read attachment.properties for attachement: /tmp/wiki/Page2-att/C:\Documents and Settings\abc\My Documents\3_eeApp.pdf-dir/attach
java.io.FileNotFoundException: \tmp\wiki\Page2-att\C:\Documents and Settings\abc\My Documents\3_eeApp.pdf-dir\attachment.properties (The filename, directory name, or volume label syntax is incorrect)
11:35:03,041 INFO  [STDOUT] java.io.FileNotFoundException: \tmp\wiki\Page2-att\C:\Documents and Settings\abc\My Documents\3_eeApp.pdf-dir\1.pdf (The filename, directory name, or volume label syntax is incorrect)
11:35:03,041 ERROR [[/wiki]] Exception: null
java.lang.NullPointerException
        at org.jboss.wiki.FileDataSource.addAtachement(FileDataSource.java:518)
        at org.jboss.wiki.WikiPage.addAttachement(WikiPage.java:382)
        at org.jboss.wiki.WikiPortlet.processAction(WikiPortlet.java:107)
        at org.jboss.portlet.JBossPortlet.processAction(JBossPortlet.java:342)
        at org.jboss.portal.portlet.invocation.DispatcherInterceptor.invokeAction(DispatcherInterceptor.java:110)
        at org.jboss.portal.portlet.invocation.DispatcherInterceptor.invoke(DispatcherInterceptor.java:191)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.portlet.invocation.PreferencesInterceptor.invoke(PreferencesInterceptor.java:93)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.server.invocation.component.ContextDispatcherInterceptor$InvokeNextCommand.execute(ContextDispatcherInterceptor.java:94)
        at sun.reflect.GeneratedMethodAccessor104.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.jboss.portal.server.servlet.CommandServlet.doGet(CommandServlet.java:49)
        at org.jboss.portal.server.servlet.CommandServlet.doPost(CommandServlet.java:98)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
        at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:539)
        at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:499)
        at org.jboss.portal.server.invocation.component.ContextDispatcherInterceptor.invoke(ContextDispatcherInterceptor.java:58)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.core.invocation.AccessControlInterceptor.invoke(AccessControlInterceptor.java:125)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.server.invocation.component.CacheInterceptor.invoke(CacheInterceptor.java:74)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:238)
        at org.jboss.portal.server.Component.invoke(Component.java:130)
        at org.jboss.portal.server.invocation.portal.TargetInterceptor.invokeWindow(TargetInterceptor.java:167)
        at org.jboss.portal.server.invocation.portal.TargetInterceptor.invoke(TargetInterceptor.java:67)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.core.invocation.ContentTypeInterceptor.invoke(ContentTypeInterceptor.java:117)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.core.invocation.UserContextInterceptor.invoke(UserContextInterceptor.java:92)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:213)
        at org.jboss.portal.server.impl.invocation.InvocationImpl.invokeNext(InvocationImpl.java:238)
        at org.jboss.portal.server.PortalServer.invoke(PortalServer.java:186)
        at org.jboss.portal.server.servlet.AbstractMainServlet.invoke(AbstractMainServlet.java:78)
        at org.jboss.portal.server.servlet.AbstractMainServlet.doGet(AbstractMainServlet.java:71)
        at org.jboss.portal.server.servlet.AbstractMainServlet.doPost(AbstractMainServlet.java:62)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.jboss.portal.core.servlet.TransactionFilter.doFilter(TransactionFilter.java:79)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
        at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
        at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:153)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:482)
        at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:856)
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:744)
        at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
        at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
        at java.lang.Thread.run(Thread.java:595)

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2. How do delete an added attachment?

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