Strange error.

[Jason Lepack]

I'm working with an OLEDB connection to a Microsoft Access database,
coding in VB.net

' Connection String is set here (called from constructor)
Private Function GetConnection() As OleDb.OleDbConnection
Return New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLED B.
4.0;" _
& "Data Source=" & mDataPath & "\DAQ.mdb")
End Function

' Sub that's throwing the error:
Public Sub insertStart(ByVal sTime As Date, ByVal jobID As
Integer)
Dim sql As String = "EXECUTE startTheor"

insCmd = New OleDb.OleDbCommand(sql, conn)
insCmd.Parameters.Add(New OleDb.OleDbParameter("[jobid]",
jobID))
insCmd.Parameters.Add(New OleDb.OleDbParameter("[dt]", sTime))

Try
conn.Open()
insCmd.ExecuteNonQuery() -- error on this line
Finally
conn.Close()
End Try
End Sub

' sub above is called from here
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click
If txtStart.Text = "" Then
txtStart.Text = Now
End If
If txtJob.Text = "blah" Then
txtJob.Text = "1"
End If
DAQ_Data.DAQ_Data.DataModule.insertStart(CDate(txt Start.Text),
CInt(txtJob.Text))
End Sub

SQL of startTheor:
INSERT INTO theoretical_job_data ( job_theor_dt, job_id, qty )
SELECT [dt] AS Expr1, [jobid] AS Expr2, 0 AS Expr3;

Structure of theoretical_job_data:
job_theor_dt - date/time
job_id - number (long)
qty - number (double)

The error that I receive is:
An unhandled exception of type 'System.Data.OleDb.OleDbException'
occurred in system.data.dll

Any help would be greatly appreciated. I run a bunch of other delete
and insert queries in the same fashion and don't have any other
problems with them.

Cheers,
Jason Lepack