Library not registered

I got this error :

 Warning  1   Cannot get the file path for type library
 "a5ededf4-2bbc-45f3-822b-e60c278a1a79" version 12.0. Library not
 registered. (Exception from HRESULT: 0x8002801D
 (TYPE_E_LIBNOTREGISTERED))   OCRMongo

In vb.net

I follow instruction from http://www.techrepublic.com/forum/questions/101-345154/how-do-i-install-microsoft-modi-110

and I still get that warning. What's the problem?