You're obviously using the wrong versions of wicket jars together.
Make sure the versions are aligned.

Eelco


On 8/6/06, Pierre-Yves Saumont <[EMAIL PROTECTED]> wrote:
> Hello,
>
> I am trying to understand how to use AjaxTabbedPanel by running the
> corresponding example. However, I am getting the exception below. I
> looked to the sources but could not find the reason.
>
> Any Idea ?
>
> Pierre-Yves
>
>
>
> 18:43:55,156 ERROR [[ajax]] Servlet.service() for servlet ajax threw
> exception
> java.lang.NoSuchMethodError:
> wicket.behavior.SimpleAttributeModifier.<init>(Ljava/lang/String;Ljava/lang/String;)V
>         at
> wicket.extensions.markup.html.tabs.TabbedPanel$2.<init>(TabbedPanel.java:137)
>         at
> wicket.extensions.markup.html.tabs.TabbedPanel$1.populateItem(TabbedPanel.java:133)
>         at wicket.markup.html.list.Loop.internalOnAttach(Loop.java:129)
>         at wicket.Component.internalAttach(Component.java:2486)
>         at wicket.MarkupContainer.internalAttach(MarkupContainer.java:341)
>         at wicket.MarkupContainer.internalAttach(MarkupContainer.java:354)
>         at wicket.MarkupContainer.internalAttach(MarkupContainer.java:354)
>         at wicket.Page.renderPage(Page.java:387)
>         at
> wicket.request.target.component.BookmarkablePageRequestTarget.respond(BookmarkablePageRequestTarget.java:226)
>         at
> wicket.request.compound.DefaultResponseStrategy.respond(DefaultResponseStrategy.java:49)
>         at
> wicket.request.compound.AbstractCompoundRequestCycleProcessor.respond(AbstractCompoundRequestCycleProcessor.java:66)
>         at 
> wicket.RequestCycle.doProcessEventsAndRespond(RequestCycle.java:852)
>         at wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:879)
>         at wicket.RequestCycle.step(RequestCycle.java:960)
>         at wicket.RequestCycle.steps(RequestCycle.java:1034)
>         at wicket.RequestCycle.request(RequestCycle.java:453)
>         at wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:215)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:697)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
>
>
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