In these two web parts, the Microsoft.Reporting.Webform is embeded. Most updated version of eProphet webparts are using verion 9.0.0.0 - this fixed the client print bug by Microsoft.

Check the web.config file to find the version of report viewer by this line(if the version is 8.0.0.0, the web parts need to be updated):

<system.web>

<httphandlers>

<add verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=9.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />

</httphandlers>

</system.web>