An error occurred while installing wp8sdk in Win8.

An error occurred while installing wp8sdk in Win8.

System: Win8 pro 64-bit + vs2012 flagship + wp8sdk

Open vs2012, create the first WP8 app, and the interface designer reports an error ....

System. nullreferenceexception does not set the object reference to the instance of the object. In Microsoft. expression. designhost. Isolation. remoting. Waiting. waitforcompletion (nestedcallcontext, blockingcall call, waithandle timeoutsignal) in Microsoft. expression. designhost. Isolation. remoting. Wait. Wait (Action
Action, int32 targetapartmentid, waithandle aborted, waithandle timeoutsignal) in Microsoft. expression. designhost. Isolation. remoting. Handle. financialout (Action action, int32 handle, waithandle aborted, callsynchronizationmode syncmode, waithandle
Timeoutsignal) in Microsoft. expression. designhost. isolation. remoting. threadexternaler. export alout [tvalue] (remotehandle '1 targetobject, Action action, callsynchronizationmode syncmode) in Microsoft. expression. designhost. isolation. remoting. threadexternaler. export alout [tresult, tvalue] (remotehandle '1
Targetobject, func '2 func, callsynchronizationmode syncmode) in Microsoft. expression. designhost. isolation. remoting. localdesignerservice. createdesignerimpl (ihostsourceitem item, ihosttexteditor Editor, remotecancellationtoken remotecanceltoken) in Microsoft. expression. designhost. isolation. remoting. localdesignerservice. <> C _ displayclass12. B _ 11 (remotecancellationtoken
In Microsoft. expression. designhost. isolation. remoting. localdesignerservice. callwithcancellation [tresult] (cancellationtoken canceltoken, func '2 func) in Microsoft. expression. designhost. isolation. remoting. localdesignerservice. microsoft. expression. designhost. idesignerservice. createdesigner (ihostsourceitem
Item, ihosttexteditor Editor, cancellationtoken canceltoken) in Microsoft. expression. designhost. isolateddesignerservice. Category. createdesignerviewinfo (cancellationtoken canceltoken) system. category does not reference objects to the instance of the object. Server stack trace:
In Microsoft. expression. designhost. isolation. remoting. stamarshaler. waitforcompletion (nestedcallcontext, blockingcall call, waithandle timeoutsignal) in Microsoft. expression. designhost. isolation. remoting. stamarshaler. financialin (Action action,
Int32 targetapartmentid) in Microsoft. expression. designhost. isolation. remoting. threadexternaler. externalin (iremoteobject targetobject, Action action) in Microsoft. expression. designhost. isolation. remoting. threadexternaler. externalin [tresult] (iremoteobject targetobject,
Func '1 func) in Microsoft. expression. designhost. Isolation. remoting. remotedesignerservice. Microsoft. expression. designhost. Isolation. remoting. iremotedesignerservice. createdesigner
Remotetoken) in system. runtime. remoting. messaging. stackbuildersink. _ privateprocessmessage (intptr MD, object [] ARGs, Object Server, object [] & outargs) in system. runtime. remoting. messaging. stackbuildersink. syncprocessmessage (iMessage MSG) exception rethrown
[0]: in system. runtime. remoting. proxies. realproxy. handlereturnmessage (iMessage reqmsg, iMessage retmsg) in system. runtime. remoting. proxies. realproxy. privateinvoke (messagedata & msgdata, int32 type) in Microsoft. expression. designhost. isolation. remoting. iremotedesignerservice. createdesigner (iremotehostsourceitem
Remoteitem, iremotehosttexteditor remoteeditor, iremotecancellationtoken canceltoken) in Microsoft. expression. designhost. isolation. remoting. localdesignerservice. <> C _ displayclass8. B _ 6 (iremotedesignerservice D) in Microsoft. expression. designhost. isolation. remoting. threadexternaler. <> C _ displayclass4 '2. B _ 3 ()
In Microsoft. expression. designhost. Isolation. remoting. stamarshaler. Call. invokeworker () system. nullreferenceexception, the object reference is not set to the instance of the object. In Microsoft. expression. Platform. platformservice. platformentry. get_platformcreator (), in Microsoft. expression. Platform. platformservice. getplatformcreator (string
Frameworkspec) in Microsoft. expression. Platform. platformservice. iscompatibleframework (frameworkname hostframework, frameworkname guestframework) in Microsoft. expression. designsurface. Project. projectcontextmanager. getprojectcontext (ihostproject, iplatform
Platform, Boolean create) in Microsoft. expression. designsurface. Project. projectcontextmanager. getsourceitemcontext (ihostsourceitem sourceitem) in Microsoft. expression. designsurface. designerservice. createdesigner (ihostsourceitem item, ihosttexteditor editor,
Cancellationtoken) in Microsoft. expression. designhost. isolation. remoting. remotedesignerservice. <> C _ displayclass10. <> C _ displayclass12. B _ F (cancellationtoken canceltoken) in Microsoft. expression. designhost. isolation. remoting. remotedesignerservice. callwithcancellation [tresult] (iremotecancellationtoken
Remotetoken, func '2 func) in Microsoft. expression. designhost. isolation. remoting. remotedesignerservice. <> C _ displayclass10. B _ E () in Microsoft. expression. designhost. isolation. remoting. threadexternaler. <> C _ displayclass16 '1. in Microsoft. expression. designhost. isolation. remoting. stamarshaler. call. invokeworker ()

I found it from the Internet, some of which are caused by anti-virus software and need to block anti-virus software;

Some say you need to uninstall vs2012 and wp8sdk, then install wp8sdk, and then install vs2012 (or use vs2012 express for windowsphone ).

I read it carefully and the reported errors are similar to those of the Silverlight designer.

Therefore, uninstall wp8sdk, Uninstall all programs with Silverlight words, and then reinstall wp8sdk.

Run vs2012 and create the WP8 app.

(Then, the Silverlight 5 SDK is installed, and no error occurs. Microsoft's tradition ....)