VB.Net: DAO Object won't create DBEngine - vb.net

Question

I'm using a dynamically created Access database as a temporary storage for a file being inputed. I know that everything works, as on my dev machine I can get this code to run. But on another system (Win 7) it's not working. I'm being stopped at this line...
DAOEngine = New DAO.DBEngine
When it gets here, it just throws an error...
Creating an instance of the COM component with CLSID {00000010-0000-0010-8000-00AA006D2EA4} from the IClassFactory failed due to the following error: 80040112.
I have searched for the error, and I can't make sense of what it's telling me other then I'm using an old way of creating databases. And right now, I was hoping for a quick fix rather then rewriting the way my storage is working.
Again, I know my code is correct because my Dev machine compiles and runs this code just fine. I'll post the entire method in case there's something else I'm missing.
Private Sub ProcessFile(ByVal Exportname As String, ByVal ExportFile As String, ByVal ImportFile As String)
' Aperture variables
Dim Table As Object 'OETable
Dim Fields As Object 'OEFields
' DAO database variables
Dim DAOEngine As DAO.DBEngine
Dim rst As DAO.Recordset
Dim ws As DAO.Workspace
Dim db As DAO.Database
Dim tbl As DAO.TableDef
Dim fld As DAO.Field
' Integer vars
Dim fieldcount As Integer
Dim I As Integer
Dim j As Integer
' Boolean Variables
Dim CalcTotals As Boolean = False
' String Array Variables
Dim headers() As String = Nothing
' String Variables
Dim lvl_lookup As String
Dim outputlist As String
Dim throwaway As String = ""
Dim totalstring As String
' Array vars
Dim totals() As Object
' Use an access database to add the serial numbers
'ws = DAODBEngine_definst.Workspaces(0)
DAOEngine = New DAO.DBEngine
ws = DAOEngine.Workspaces(0)
If File.Exists(alAperture.prjPath & "\temp.mdb") Then
File.Delete(alAperture.prjPath & "\temp.mdb")
End If
db = ws.CreateDatabase(alAperture.prjPath & "\temp.mdb", DAO.LanguageConstants.dbLangGeneral)
tbl = db.CreateTableDef("legend")
If alAperture.tbls.Item(Exportname & " Table") Is Nothing Then
Table = alAperture.tbls.Item("Legend Text Table")
Else
Table = alAperture.tbls.Item(Exportname & " Table")
End If
Fields = Table.Fields
fieldcount = Fields.Count
' Create the fields
For I = 0 To fieldcount - 1
If Fields.Item(I).DataType = 2 Then
' We have a numeric field
fld = tbl.CreateField(Fields.Item(I).Name, 6)
CalcTotals = True
Else
fld = tbl.CreateField(Fields.Item(I).Name, 10, 255)
fld.AllowZeroLength = True
End If
tbl.Fields.Append(fld)
Next
' Create the table
db.TableDefs.Append(tbl)
' Open the table as a recordset
rst = db.OpenRecordset("legend", DAO.RecordsetTypeEnum.dbOpenTable)
' Open the exportfile for read
Dim streamIn As StreamReader = New StreamReader(ExportFile)
ReDim totals(fieldcount - 1)
I = 0
lvl_lookup = ""
Do
' Grab next record and redim to dimension of table, minus the series column
Dim nextRecord() As String = Split(streamIn.ReadLine, """,""")
ReDim Preserve nextRecord(fieldcount - 1)
If I = 0 Then
headers = nextRecord
I = 1
Else
' *** HEADER RECORD
If lvl_lookup = "" Then
lvl_lookup = nextRecord(0)
' Add the header record
rst.AddNew()
rst.Fields(0).Value = lvl_lookup
rst.Fields(1).Value = 0
For j = 2 To fieldcount - 1
If rst.Fields(j).Type = 10 Then
rst.Fields(j).Value = Replace(headers(j - 1), """", "")
Else
rst.Fields(j).Value = 0
End If
Next
rst.Update()
End If
' *** RECORDS
If nextRecord(0) = lvl_lookup Then
' addrecords
addrecord(totals, nextRecord, rst, fieldcount, I)
Else
' add total row
' padlines
If CalcTotals Then
rst.AddNew()
rst.Fields(0).Value = lvl_lookup
rst.Fields(1).Value = I
totalstring = "Total:"
For j = 2 To fieldcount - 2
If rst.Fields(j).Type = 6 Then
If IsNothing(totals(j)) Then
rst.Fields(j).Value = 0
Else
rst.Fields(j).Value = totals(j)
End If
Else
rst.Fields(j).Value = totalstring
totalstring = ""
End If
Next
rst.Fields(9).Value = 0
rst.Update()
I = I + 1
End If
'padlines
While I <= 80
rst.AddNew()
rst.Fields(0).Value = lvl_lookup
rst.Fields(1).Value = I
rst.Update()
I = I + 1
End While
I = 1
lvl_lookup = nextRecord(0)
ReDim totals(fieldcount - 2)
' add record
addrecord(totals, nextRecord, rst, fieldcount, I)
End If
If streamIn.EndOfStream Then
' add total row
' padlines
If CalcTotals Then
rst.AddNew()
rst.Fields(0).Value = lvl_lookup
rst.Fields(1).Value = I
totalstring = "Total:"
For j = 2 To fieldcount - 2
If rst.Fields(j).Type = 6 Then
If IsNothing(totals(j)) Then
rst.Fields(j).Value = 0
Else
rst.Fields(j).Value = totals(j)
End If
Else
rst.Fields(j).Value = totalstring
totalstring = ""
End If
Next
rst.Fields(9).Value = 0
rst.Update()
I = I + 1
End If
'padlines
While I <= 80
rst.AddNew()
rst.Fields(0).Value = lvl_lookup
rst.Fields(1).Value = I
rst.Update()
I = I + 1
End While
End If
End If
Loop Until streamIn.EndOfStream
streamIn.Close()
' ok lets write the import file
Dim streamOut As StreamWriter = New StreamWriter(ImportFile)
rst.MoveFirst()
Do Until rst.EOF
outputlist = Chr(34) & rst.Fields(0).Value & Chr(34) & "," & Chr(34) & VB6.Format(rst.Fields(1).Value, "00") & Chr(34)
For j = 2 To fieldcount - 1
outputlist = outputlist & "," & Chr(34) & rst.Fields(j).Value & Chr(34)
Next
streamOut.WriteLine(outputlist)
rst.MoveNext()
Loop
streamOut.Close()
rst.Close()
db.Close()
ws.Close()
rst = Nothing
db = Nothing
ws = Nothing
fld = Nothing
tbl = Nothing
Table = Nothing
Fields = Nothing
End Sub

Answer 1

Are you using Microsoft DAO 3.6? Using 'Microsoft DAO 2.5/3.51 Compatibility Library' is very old. DAO 3.5 is the version which comes with Access 97.
Later I should've done a search on the GUID in the error message. Yes, that GUID is for DAO 3.5 which is very old and comes with Access 97 and Visual Basic 6. Use DAO 3.6/Jet 4.0 which comes with Weindows 2000 and newer OSs.
From PRB: CLSID {00000010-0000-0010-8000-00AA006D2EA4} Not Found When You Run an Application "The {00000010-0000-0010-8000-00AA006D2EA4} CLSID is associated with DAO350.dll."