Problems with RAM DataAccess following the DA for Dummies guide

I am trying to programmatically access data from a RAM SS file by following this guide(VB in Excel).

The Excel file crashes when I try to call any method which fetches data from a file eg

    Set IStories = IModel.GetStories
    lNumStories = IStories.GetCount

These methods do work in some cases which must be like 10% of the number of times I've tried across multiple computers.

The input file I am using is correct as it loads correctly in the GUI app.

Also initialization methods always work eg:
    Set RamDataAcc1 = New RAMDATAACCESSLib.RamDataAccess1
   
    Set RAMDataAccIDBIO = RamDataAcc1.GetDispInterfacePointerByEnum(IDBIO1_INT)
    RAMDataAccIDBIO.GetDatabaseVersion OpenFile, dVersion
    
    dVersion = Round(dVersion, 1)
    SendToLogFile ("Version: " & dVersion)
    RAMDataAccIDBIO.LoadDataBase2 OpenFile, "work"
    

The full file I am using:

Public Sub MyTest()
   
    Dim OpenFile As String
    Dim RamDataAcc1 As RamDataAccess1
    Dim RAMDataAccIDBIO As RAMDATAACCESSLib.IDBIO1
    Dim dVersion As Double
    
    Dim IModel As RAMDATAACCESSLib.IModel
    Dim IStories As RAMDATAACCESSLib.IStories
    Dim IStory As RAMDATAACCESSLib.IStory
    Dim IFloorTypes As RAMDATAACCESSLib.IFloorTypes
    Dim IBeams As RAMDATAACCESSLib.IBeams
    Dim IBeam As RAMDATAACCESSLib.IBeam
    
    
    Dim lNumStories As Long
    Dim lStory As Long
    Dim strStoryID As String
    Dim lNumBeams As Long
    Dim lBeam As Long
    
   
    SendToLogFile ("-------------------------------")
        
    OpenFile = "D:\Projects\workDesk\RAM\project\r2.rss"

    'Initialize DataAccess
    Set RamDataAcc1 = New RAMDATAACCESSLib.RamDataAccess1
    
    'Initialize IO interface
    Set RAMDataAccIDBIO = RamDataAcc1.GetDispInterfacePointerByEnum(IDBIO1_INT)
    RAMDataAccIDBIO.GetDatabaseVersion OpenFile, dVersion
    
    dVersion = Round(dVersion, 1)
    SendToLogFile ("Version: " & dVersion)
    RAMDataAccIDBIO.LoadDataBase2 OpenFile, "work"
   

    Set IModel = RamDataAcc1.GetDispInterfacePointerByEnum(IModel_INT)
    
    Set IStories = IModel.GetStories
    lNumStories = IStories.GetCount
    
    For lStory = 0 To (lNumStories - 1)
          
        'Getting story info
        Set IStory = IStories.GetAt(lStory)
        strStoryID = IStory.strLabel
        
        'Get member ID lists on story
        Set IBeams = IStory.GetBeams
        IBeams.Filter eBeamFilter_Material, ESteelMat
        
        lNumBeams = IBeams.GetCount
        For lBeam = 0 To lNumBeams - 1
            Set IBeam = IBeams.GetAt(lBeam)
            SendToLogFile ("IBeam: " & lBeam)
        Next
        
    Next
    
   
    SendToLogFile ("END")
End Sub

SendToLog is correctly defined and definitely not a problem. Trusted locations, file paths etc are also correct.

Excel just crashes so not sure what more info I can provide.

Thanks for any help!