AutoCAD VB :: Plot To Device Failing In 2005?

my app permits to the users select multiple DWG files, inserting them into a MSHFLEXGRID.

After this the user can select a DWT file and store in a matrix (PC) all its AcadPlotConfigurations.

The user can select distinct Page Layout for each DWG file selected.

Then running the code below, each file is opened in ACAD and then printed using the specific Page Layout.

This was running very good in ACAD 2002. After migrate to ACAD 2005 only the first file is printed. The others DWG files return FALSE to the PlotToDevice command.

Is it missing some command ?Does ACAD 2005 need anything extra to run ?

Obs: the DWT Page Layouts were created for MODELs and the files to be printed are using only the model space too.

'################################
' PLOT SAMPLE
'################################
Dim PC() As AcadPlotConfiguration
Private Sub Plot_Click()
Dim Layout As AcadLayout
Dim LayoutBase As AcadLayout
Dim indice As Integer
Dim retorno As Boolean

[code].....