Service tests not loading in 12.02

I have issue loading the API tests in the UFT 12.02 . Attached are the error messages. I have uninstalled and re-installed the application. Cleared the registry and tried still the API tests are not loading.

   Problem signature:
     Problem Event Name:    CLR20r3
     Problem Signature 01:    uft.exe
     Problem Signature 02:    12.0.2181.0
     Problem Signature 03:    546a0254
     Problem Signature 04:    HP.ST.Shared.XmlGridUI
     Problem Signature 05:    12.0.1995.0
     Problem Signature 06:    545f5aa2
     Problem Signature 07:    54e
     Problem Signature 08:    16
     Problem Signature 09:    System.NullReferenceException
     OS Version:    6.1.7601.2.1.0.256.4
     Locale ID:    1033
     Additional Information 1:    0a9e
     Additional Information 2:    0a9e372d3b4ad19135b953a78882e789
     Additional Information 3:    0a9e
     Additional Information 4:    0a9e372d3b4ad19135b953a78882e789

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