windows 8.1 Enterprise N Build 9600 skype app crash

Hello
 
when i open skypeapp i see the skype logo screen then the app crash and return to desktop with no errors
 
but i check the event log viewer and here is the log
 
- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
  <Provider Name="Microsoft-Windows-AppHost" Guid="{98E0765D-8C42-44A3-A57B-760D7F93225A}" />
  <EventID>126</EventID>
  <Version>0</Version>
  <Level>2</Level>
  <Task>8</Task>
  <Opcode>12</Opcode>
  <Keywords>0x8000000000000001</Keywords>
  <TimeCreated SystemTime="2014-05-12T16:55:48.458826300Z" />
  <EventRecordID>6</EventRecordID>
  <Correlation />
  <Execution ProcessID="748" ThreadID="2244" />
  <Channel>Microsoft-Windows-AppHost/Admin</Channel>
  <Computer>HeNNo-PC</Computer>
  <Security UserID="S-1-5-21-2912345420-3162785192-[removed for privacy]-1001" />
  </System>
- <UserData>
- <WWAUnhandledApplicationException xmlns="http://manifests.microsoft.com/win/2005/08/windows/wwahost/events">
  <DisplayName>Skype</DisplayName>
  <ApplicationName>App</ApplicationName>
  <AppUserModelId>Microsoft.SkypeApp_kzf8qxf38zg5c!App</AppUserModelId>
  <PackageFullName>Microsoft.SkypeApp_2.8.0.1001_x86__kzf8qxf38zg5c</PackageFullName>
  <ProcessId>748</ProcessId>
  <ErrorType>WinRT error</ErrorType>
  <ErrorDescription>The specified module could not be found.</ErrorDescription>
  <DocumentFile>/default.html</DocumentFile>
  <SourceFile>ms-appx://microsoft.skypeapp/js/log.js</SourceFile>
  <SourceLine>19</SourceLine>
  <SourceColumn>3</SourceColumn>
  <StackTrace>ms-appx://microsoft.skypeapp/js/log.js:19:3 log(string) ms-appx://microsoft.skypeapp/js/diagnostics/perfTrack.js:15:17 init() ms-appx://microsoft.skypeapp/js/application/bootstrapper.js:579:9 bootstrap() ms-appx://microsoft.skypeapp/js/default.js:8:9 Anonymous function() ms-appx://microsoft.skypeapp/js/default.js:1:2 Global code</StackTrace>
  </WWAUnhandledApplicationException>
  </UserData>
  </Event>

 i tried the update in the following link
 
http://support.microsoft.com/kb/2902892
 
but the windows not allowed 
 
how could i resolve this problem ?
 
Regards,