SQL Server error 8178 when updating the backend database from VS2005 Windows application using datasets and data adapters

SQL Server Table Update code:
    Public Function UpdateSQlDB(ByVal MyDataSet As Object, ByVal MyDataAdapter As Object, ByVal MySQLTable As String) As Boolean
        'This sub updates the SQl database.
        'MyDataSet - name of the dataset that contains the datatable from which the SQL updates will be made
        'MyDataAdapter - name of the data adapter to use for the update
        'MySQLTable - name of the SQL Table dataset to end edits
        Try
            Me.BindingContext(MyDataSet, MySQLTable).EndCurrentEdit()  'Stop any current edits
            MyDataAdapter.Update(MyDataSet)                            'Update SQL Server database
 
        Catch eConcurrency As DBConcurrencyException
            MessageBox.Show("This record has been updated by another user. " & ControlChars.CrLf _
            & "Exit the form, reselect the record, and redo your updates.", "DB Concurrency Error")
 
            'The update failed
            Return False
 
        Catch eData As DataException
            MessageBox.Show(eData.Message, "ADO.Net Error")
 
            'The update failed
            Return False
 
        Catch eSQL As SqlException
            Dim iError As Integer
            Dim SQLErrors As SqlErrorCollection = eSQL.Errors
            Dim sErrorSummary As String = String.Empty
 
            For iError = 0 To SQLErrors.Count - 1
                'Display a custom error msg for certain SQL errors otherwise display standard SQl error msg
                Dim SQlErrorMsg
                'If SQLErrors(iError).Number = 547 Then
                'SQlErrorMsg = "Delete cancelled. History records must be deleted first."
                'Else
                SQlErrorMsg = SQLErrors(iError).Message
                'End If
 
                sErrorSummary = sErrorSummary & SQLErrors(iError).Number & " - " _
                & SQlErrorMsg _
                & ControlChars.CrLf
            Next iError
 
            MessageBox.Show(sErrorSummary, "SQL Server Error")
 
            'The update failed
            Return False
 
        Catch eSystem As Exception
            MessageBox.Show(eSystem.Message, "System Error")
 
            'The update failed
            Return False
        End Try
 
        'The update succeeded
        Return True
    End Function
 
SQL INSERT statement:
INSERT INTO Issue
                         (Description, Doc_URL, Orig_ID, Orig_Source_ID, Orig_Point_ID, Orig_Case_No, Response_To_ID, Response_Due_Date, Open_Date, Create_Date, 
                         Last_Update_Date, Status_Activity_ID, Status_Activity_Date, Status, Status_Date)
VALUES        (@Description,@Doc_URL,@Orig_ID,@Orig_Source_ID,@Orig_Point_ID,@Orig_Case_No,@Response_To_ID,@Response_Due_Date,@Open_Date,@Create_Date,@Last_Update_Date,@Status_Activity_ID,@Status_Activity_Date,@Status,@Status_Date)
 
SQL UPDATE statement (auto-generated from VS2005 for dataadapter):
UPDATE       Issue
SET                Description = @Description, Doc_URL = @Doc_URL, Orig_ID = @Orig_ID, Orig_Source_ID = @Orig_Source_ID, Orig_Point_ID = @Orig_Point_ID, 
                         Orig_Case_No = @Orig_Case_No, Response_To_ID = @Response_To_ID, Response_Due_Date = @Response_Due_Date, Open_Date = @Open_Date, 
                         Create_Date = @Create_Date, Last_Update_Date = @Last_Update_Date, Status_Activity_ID = @Status_Activity_ID, 
                         Status_Activity_Date = @Status_Activity_Date, Status = @Status, Status_Date = @Status_Date
WHERE        (ID = @Original_ID) AND (Description = @Original_Description) AND (@IsNull_Doc_URL = 1 AND Doc_URL IS NULL OR
                         Doc_URL = @Original_Doc_URL) AND (@IsNull_Orig_ID = 1 AND Orig_ID IS NULL OR
                         Orig_ID = @Original_Orig_ID) AND (@IsNull_Orig_Source_ID = 1 AND Orig_Source_ID IS NULL OR
                         Orig_Source_ID = @Original_Orig_Source_ID) AND (@IsNull_Orig_Point_ID = 1 AND Orig_Point_ID IS NULL OR
                         Orig_Point_ID = @Original_Orig_Point_ID) AND (@IsNull_Orig_Case_No = 1 AND Orig_Case_No IS NULL OR
                         Orig_Case_No = @Original_Orig_Case_No) AND (@IsNull_Response_To_ID = 1 AND Response_To_ID IS NULL OR
                         Response_To_ID = @Original_Response_To_ID) AND (@IsNull_Response_Due_Date = 1 AND Response_Due_Date IS NULL OR
                         Response_Due_Date = @Original_Response_Due_Date) AND (@IsNull_Open_Date = 1 AND Open_Date IS NULL OR
                         Open_Date = @Original_Open_Date) AND (@IsNull_Create_Date = 1 AND Create_Date IS NULL OR
                         Create_Date = @Original_Create_Date) AND (@IsNull_Last_Update_Date = 1 AND Last_Update_Date IS NULL OR
                         Last_Update_Date = @Original_Last_Update_Date) AND (@IsNull_Status_Activity_ID = 1 AND Status_Activity_ID IS NULL OR
                         Status_Activity_ID = @Original_Status_Activity_ID) AND (@IsNull_Status_Activity_Date = 1 AND Status_Activity_Date IS NULL OR
                         Status_Activity_Date = @Original_Status_Activity_Date) AND (@IsNull_Status = 1 AND Status IS NULL OR
                         Status = @Original_Status) AND (@IsNull_Status_Date = 1 AND Status_Date IS NULL OR
                         Status_Date = @Original_Status_Date)