Syntax error (missing operator) in query expression '((ProductID = ?) AND ((? = 1 AND Product Name IS NULL) OR (Product Name = ?)) AND ((? = 1 AND Price IS NULL) OR (Price = ?)) AND ((? = 1 AND Quantity IS NULL) OR (Quantity = ?)))'.

I need some help sorting this error out in Visual Basics.Net 2008. I am trying to update records in a MS Access Database 2008. I have it being able to update one table but the other table is just not having it.

Private Sub Admin_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
    'Reads Users into the program from the text file (Located at Module.VB)
    ReadUsers()

    'Connect To Access 2007 Database File
    con.ConnectionString = ("Provider=Microsoft.ACE.OLEDB.12.0;" & "Data Source=E:\Computing\Projects\Login\Login\bds.accdb;")
    con.Open()

    'SQL connect 1
    sql = "Select * From Clients"
    da = New OleDb.OleDbDataAdapter(sql, con)
    da.Fill(ds, "Clients")
    MaxRows = ds.Tables("Clients").Rows.Count
    intCounter = -1

    'SQL connect 2
    sql2 = "Select * From Products"
    da2 = New OleDb.OleDbDataAdapter(sql2, con)
    da2.Fill(ds, "Products")
    MaxRows2 = ds.Tables("Products").Rows.Count
    intCounter2 = -1

    'Show Clients From Database in a ComboBox
    ComboBoxClients.DisplayMember = "ClientName"
    ComboBoxClients.ValueMember = "ClientID"
    ComboBoxClients.DataSource = ds.Tables("Clients")

End Sub

The button, the error appears on da2.update(ds, "Products")

Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
    Dim cb2 As New OleDb.OleDbCommandBuilder(da2)
    ds.Tables("Products").Rows(intCounter2).Item("Price") = ProductPriceBox.Text
    da2.Update(ds, "Products")
    'Alerts the user that the Database has been updated
    MsgBox("Database Updated")
End Sub

However the code works on updating another table

Private Sub UpdateButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles UpdateButton.Click
    'Allows users to update records in the Database
    Dim cb As New OleDb.OleDbCommandBuilder(da)
    'Changes the database contents with the content in the text fields
    ds.Tables("Clients").Rows(intCounter).Item("ClientName") = ClientNameBox.Text
    ds.Tables("Clients").Rows(intCounter).Item("ClientID") = ClientIDBox.Text
    ds.Tables("Clients").Rows(intCounter).Item("ClientAddress") = ClientAddressBox.Text
    ds.Tables("Clients").Rows(intCounter).Item("ClientTelephoneNumber") = ClientNumberBox.Text
    'Updates the table withing the Database
    da.Update(ds, "Clients")
    'Alerts the user that the Database has been updated
    MsgBox("Database Updated")
End Sub