Handling print event in visual studio 2010

Question

I'm  having problems controlling printer on the server.
getting error error on printer etc...
Is their an event on the report viewer print button that I can get to and provide
code in vb.net to attempt to control printing.
I've tried it all caching, sessions, etc...
Nothing has worked to prevent these annoying errors.
Below is a code snippet that renders pages but does not
guarantee printing of any number of pages.
It's happening within the app on the initial print attempt
and intermittently for large or small reports
If (Page.IsPostBack = False) Then
            'Preload Assemblies
            oCrReportDocument.Load("
DataServer64\Avista\Isaac.rpt")
            oCrReportDocument = New ReportDocument()
            oCrReportDocument.Load(reportpath)
            'Store Report Object
            Session.Add("RptNum", oCrReportDocument)
            'srvLoad.ReportSource = Session("RptNum")
            srcUse.CacheDuration = 500
        End If
        If (Page.IsPostBack = True) Then
            oCrReportDocument = Session("RptNum")
            'srvLoad.RefreshReport()
        End If

Answer 1

The exact error is error occurred on the server printing will be stopped.
The error occurs on small and large reports immediately after clicking print button
I intermittenly get commucations error
It seems I have no control once I click the print button
I had the CR12 report developer turn off verify (Did'nt test yet)
This is a app of a solution with 10 projects.  Looking to see if
original code developer is grabbing control of printing
Dim oCrReportDocument As New CrystalDecisions.CrystalReports.Engine.ReportDocument()
        Dim srvLoad As New CrystalDecisions.Web.CrystalReportViewer
        Dim srcUse As New CrystalReportSource
        If (Page.IsPostBack = False) Then
            'Preload Assemblies
            oCrReportDocument.Load("
DataServer64\Avista\Isaac.rpt")
            oCrReportDocument = New ReportDocument()
            oCrReportDocument.Load(reportpath)
            'Store Report Object
            Session.Add("RptNum", srvLoad)
            'srvLoad.ReportSource = Session("RptNum")
            srcUse.CacheDuration = 62000
        End If
        If (Page.IsPostBack = True) Then
            srvLoad = Session("RptNum")
            'srvLoad.RefreshReport()
            srcUse.CacheDuration = 62000
        End If