Compile Error: Can't find project or library

Hi Everyone,

I was using one add-in which will pull the data's from Quality center to Excel sheet.

Add-In was working fine last month. Today when i tried to use the add-in I am getting the following error in one of the line in code.

"Compile Error: Can't find project or library"

marked the error part in red.

Public tdc As New TDAPIOLELib.TDConnection, Unload_Flag As Boolean, Cancel_Exec As Boolean
Public CurTestSet

Public RunType As String
Public Name_Col As Long, Status_Col As Long, Actual_Col As Long, Attach_Col As Long, ExecLog_Col As Long

'Public Flag As Boolean
Public Res_Exl_Flag As Boolean, ResWrkBook
Public Exclude_Attach As Boolean, Report_Format As String, Output_Dir As String, Output_Result_Dir As String
Public TC_ID_Start As Long, TC_ID_Len As Long, ReportOption As Boolean
Public tstLabFldr

I did some google search and came to knw this is due to a recent update by microsoft.
But none of the solutions was helpful. I dont have any missing reference checked.
Please find the attached screenshot of reference
reference.JPG

Please help me. Thanks in advance