SQLHelper "Handle is not initialized" error

[Manuel]

I'm using the SQLHelper class to do an insert and get the identity field
this way:

--------------
Dim sql As String = "INSERT INTO [Message] ([Msg]) VALUES
('MyMessage');SELECT SCOPE_IDENTITY()"
Dim ds As Data.DataSet = SqlHelper.ExecuteDataset(ConnectionString,
Data.CommandType.Text, sql)
Dim MsgID As Integer = ds.Tables(0).Rows(0).Item(0).ToString
--------------

It works the first time but if I try to run it a second time it will break
while executing SqlHelper.ExecuteDataset. It throws out a "Handle is not
initialized" error while opening a new connection inside the SqlHelper
Class.