Upload Applet Problem : ClassNotFoundException: com.gallery.GalleryRemote.GRAppletMini

Hello Guys:

I am a Gallery User come from Taiwan.

I have a problem the same as the post (http://gallery.menalto.com/node/26617)

My error message :
java.lang.ClassNotFoundException: com.gallery.GalleryRemote.GRAppletMini
at sun.applet.AppletClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.applet.AppletClassLoader.loadCode(Unknown Source)
at sun.applet.AppletPanel.createApplet(Unknown Source)
at sun.plugin.AppletViewer.createApplet(Unknown Source)
at sun.applet.AppletPanel.runLoader(Unknown Source)
at sun.applet.AppletPanel.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed.
at sun.applet.AppletClassLoader.getBytes(Unknown Source)
at sun.applet.AppletClassLoader.access$100(Unknown Source)
at sun.applet.AppletClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 10 more

I try to download the newest GalleryRemoteAppletMini.jar and replace it into
modules/uploadapplet/applets/GalleryRemoteAppletMini.jar ,but still can't resolve my problem

I try very hard and still can't find out this problem, can anybody help me plz ?