Errors Executing stored procedure sp_OACreate

I have moved the database from Server 2005 to Server 2012. While running Stored Procedures I get consistent error:
Msg 50000, Level 16, State 1, Procedure sp4_rec_declare_email, Line 77
OLE Automation Error Information
Creating object(lkDeclareDocSrvr.lkDeclare) failure
 Source: ODSOLE Extended Procedure
 Description:  Invalid class string
I have tried to activate OLE Automation Procedures
sp_configure 'show advanced options', 1  
GO  
RECONFIGURE;  
GO  
sp_configure 'Ole Automation Procedures', 1  
GO  
RECONFIGURE;  
GO  
sp_configure 'show advanced options', 1  
GO  
RECONFIGURE;

I enclose the code below

EXEC @vHr = master..sp_OACreate 'lkDeclareDocSrvr.lkDeclare', @vObject OUT, 4
IF @vHr <> 0
BEGIN
      /* instance failed; get error info */
      SET @vOutput = 'OLE Automation Error Information' + Char(13) + 'Creating object(lkDeclareDocSrvr.lkDeclare) failure'

      EXEC @vHr = master..sp_OAGetErrorInfo @vObject, @vSource OUT, @vDescription OUT
      IF @vHr = 0
          SET @vOutput = @vOutput + Char(13) + ' Source: ' + ISNULL(@vSource, '') + Char(13) + ' Description: ' + ISNULL(@vDescription, '')
      ELSE
          SET @vOutput = @vOutput + ' sp_OAGetErrorInfo failed.'
      
      RAISERROR (@vOutput, 16, 1)
      RETURN @LK_ERR_FOR_INNER_USE
END