URL for GwtDevPluginSetup.exe is broken

Since yesterday, I keep getting following error when load local GWT
application for the first time, please help where I can get
GwtDevPluginSetup.exe.

404. That's an error.
The requested URL /tag/s/appguid%3D%7B9a5e649a-
ec63-4c7d-99bf-75adb345e7e5%7D%26lang%3Den%26appname%3DGWT
%2520Developer%2520Plugin%2520for%2520IE%2520%2528x86%2529%26needsadmin
%3Dfalse/gwt/plugins/ie/GwtDevPluginSetup.exe was not found on this
server. That's all we know

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