failed to deploy process through servlets

[saphir]

I create a process in GPD, when i deploy it, it come up with a exception in eclipse. The Exception is:

java.io.FileNotFoundException: http://localhost:8080/jbpm/deploy?archive=file://C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\example1.par26141.tmp
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1147)
at java.net.URL.openStream(URL.java:1007)
at org.jbpm.ui.action.DeployProcessActionDelegate.deployProcessWithServlet(Unknown Source)
at org.jbpm.ui.action.DeployProcessActionDelegate.access$1(Unknown Source)
at org.jbpm.ui.action.DeployProcessActionDelegate$1.run(Unknown Source)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:346)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:291)
at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:447)
at org.jbpm.ui.action.DeployProcessActionDelegate.showProgressMonitorDialog(Unknown Source)
at org.jbpm.ui.action.DeployProcessActionDelegate.run(Unknown Source)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:246)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:538)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:488)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:400)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:843)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3080)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2713)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1699)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1663)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:367)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:226)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:376)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:163)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:334)
at org.eclipse.core.launcher.Main.basicRun(Main.java:278)
at org.eclipse.core.launcher.Main.run(Main.java:973)
at org.eclipse.core.launcher.Main.main(Main.java:948)

It is a FileNotFoundExeption, but I am sure the file example1.par26141.tmp is right there.
BTW, when I access to http://localhost:8080/jbpm/deploy , it returns a http 404 error!
Can anybody help me?