Server Manager crashes after upgrading from Windows Server 2012 to 2012 R2

[hostrunway]

I can't start Server Manager. Any help is appreciated. It gives me the following crash information:

Problem signature:
  Problem Event Name: BEX64
  Application Name: ServerManager.exe
  Application Version: 6.3.9600.16384
  Application Timestamp: 52156f0b
  Fault Module Name: StackHash_e7de
  Fault Module Version: 0.0.0.0
  Fault Module Timestamp: 00000000
  Exception Offset: PCH_56_FROM_ntdll+0x000000000009808A
  Exception Code: c0000005
  Exception Data: 0000000000000008
  OS Version: 6.3.9600.2.0.0.400.8
  Locale ID: 1033
  Additional Information 1: e7de
  Additional Information 2: e7debde6e66874f623b9dcd1ed9d155f
  Additional Information 3: 66a5
  Additional Information 4: 66a531e85e58a5157c21eef3f58502e2

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Thanks in advance.

HostRunway

[Josepesv]

What if uninstall and do a new clean installation of SM -better if Server Manager is updated-