DAO RecordSet error 3251 when using FindFirst - vba

Question

I am getting "Run-time error '3251': Operation is not supported for this type of object." when I am trying to use the "FindFirst" on my DAO RecordSet. Can someone explain to me what I am doing wrong for this not to search for the record. The variable I am using is returning the correct value for the search.
Private Sub ctrSend_Click()
Dim intI As Integer
Dim lst As ListBox
Dim varItem As Variant
Dim rst As DAO.Recordset
Dim rst2 As DAO.Recordset
Dim qtySum As Variant
Dim qtyDiff As Variant
Dim rowMax As Variant
Dim rowUpdate As Variant
Set lst = Me![lstShipping]
Set rst = CurrentDb.OpenRecordset("ShipInv", dbOpenTable)
Set rst2 = CurrentDb.OpenRecordset("Storage", dbOpenTable)
qtySum = 0
rowMax = 0
With lst
If .ItemsSelected.count = 0 Then Exit Sub
For Each varItem In .ItemsSelected
qtySum = qtySum + .Column(3, varItem)
Next
If Me.[ctrQtyProd] = qtySum Then
MsgBox "Qty Selected EQUALS Qty Being Shipped.", vbOKOnly, "Confirmation Message"
ElseIf Me.[ctrQtyProd] > qtySum Then
MsgBox "Qty Selected LESS THAN Qty Being Shipped, please select more Inventory.", vbOKOnly, "Confirmation Message"
Else
qtyDiff = qtySum - Me.[ctrQtyProd]
rowMax = lst.Column(3, lst.ItemsSelected.count)
rowUpdate = rowMax - qtyDiff
rst2.FindFirst "[BIN] = '" & lst.Column(0, lst.ItemsSelected.count) & "'"
rst2![QtyProd] = lst.Column(3, lst.ItemsSelected.count)
rst2.Update
rst2.Close
MsgBox "Storage Successfully Updated.", vbOKOnly, "Confirmation Message"
End If
End With
With lst
For Each varItem In .ItemsSelected
rst.AddNew
rst!Order = Me.[ctrSOrder]
rst!EntDate = Date
rst!ShipDate = Me.[ctrSDate]
rst!BIN = .Column(0, varItem)
rst!SKU = .Column(1, varItem)
rst!Lot = .Column(2, varItem)
rst!QtyProd = rowUpdate
rst.Update
Next
End With
rst.Close
Set rst = Nothing
Set rst2 = Nothing
MsgBox "Shipping List Successfully Updated.", vbOKOnly, "Confirmation Message"
End Sub

Answer 1

Did you try opening the recordset as a dbOpenDynaset (default without the enum specified in the open statement) or dbOpenSnapshot instead? The documentation on the Microsoft MSDN site specifies it takes one of those two recordsets.
Locates the first record in a dynaset- or snapshot-type Recordset object that satisfies the specified criteria and makes that record the current record (Microsoft Access workspaces only).
Microsoft MSDN article on Recordset.FindFirst