SafeInvoke method is a simple wrapper around Control.Invoke and just like this .NET method, it requires the Control to actually be fully initialized before it can be used (because it actually uses the Control's message queue to invoke the delegate).

An enhanced version of SafeInvoke should solve this problem:

C#:

private void SafeInvoke(Delegate method, params object[] args)
{
    try
    {
        if (!InvokeRequired)
            method.DynamicInvoke(args);
        else if (!IsDisposed)
            Invoke(method, args);
    }
    catch (ObjectDisposedException)
    {
    }
}

VB.NET:

Private Sub SafeInvoke(ByVal method As [Delegate], ByVal args() As Object)
    Try
        If Not InvokeRequired Teh
            method.DynamicInvoke(args)
        Else
            If Not IsDisposed Then Invoke(method, args)
        End If
    Catch x As ObjectDisposedException
    End Try
End Sub

The same problem with Control.Invoke method was discussed in microsoft.public.dotnet.framework.windowsforms newsgroup, check it out if you are interested in more information.