PrintMode="ActiveX" & Crystal Reports 2008

Question

Using CR XI.5, we were having our users print crystal reports in our .NET web application using a CrystalReportViewer and setting the PrintMode="ActiveX".
To do this, we had to add this to our Web.Config:
<configSections><sectionGroup name="businessObjects"><sectionGroup name="crystalReports"><section name="reportMappings" type="CrystalDecisions.Shared.ReportMappingHandler, CrystalDecisions.Shared, Version=11.5.3700.0, Culture=neutral, PublicKeyToken=692fbea5521e1304, Custom=null"/></sectionGroup></sectionGroup></configSections>
<businessObjects><crystalReports><reportMappings><add reportName="ClassLabels.rpt" path="Reports\ClassLabels.rpt"/><add reportName="ClassStarted.rpt" path="Reports\ClassStarted.rpt"/><add reportName="ClassStatus.rpt" path="Reports\ClassStatus.rpt"/><add reportName="inactivestudents.rpt" path="Reports\inactivestudents.rpt"/><add reportName="NewClassLabels.rpt" path="Reports\NewClassLabels.rpt"/></reportMappings></crystalReports></businessObjects>
Since we upgraded to Crystal Reports 2008 last night, we are getting errors in our app.  I tried upgrading the control Version number in the Web.Config, but I am getting an error saying it can't find CrystalDecisions.Shared.ReportMappingHandler.
An error occurred creating the configuration section handler for businessObjects/crystalReports/reportMappings: Could not load file or assembly 'CrystalDecisions.Shared, Version=12.0.1100.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or one of its dependencies. The system cannot find the file specified.
After removing the above code out of the web.config, I am getting an error when trying to print from IE that says
IE Security Warning
Windows has blocked this software because it can't verify the publisher.
Name: PrintControl.cab
Publisher: Unknown Publisher
Any ideas?  I just created a brand new app with a new crystal report and was able to recreate the error.  Thanks in advance for your help.

Answer 1

We are using Visual Studio 2008 actually.
Like I mentioned, I created a brand new app with a brand new CR 2008 report and got the error as well so I don't believe the issue to be in the actual reports.
I installed the CRRuntime_12_0_mlb.exe from a download last week of cr120_redist_install.zip.
When I add the code below to my Web.Config, the app builds properly and the dialog boxes load properly on my local system.
<configSections>
        <sectionGroup name="businessObjects">
            <sectionGroup name="crystalReports">
                <section name="reportMappings" type="CrystalDecisions.Shared.ReportMappingHandler, CrystalDecisions.Shared, Version=12.0.2000.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
            </sectionGroup>
        </sectionGroup>
    </configSections>
    <businessObjects>
        <crystalReports>
            <reportMappings>
                <add reportName="myreport.rpt" path="myreport.rpt"/>
            </reportMappings>
        </crystalReports>
    </businessObjects>
But when I upload that code to my Windows 2003 server, I get the IE Script Error mentioned above.