This procedure is only available if using Employee Portal 2. And is normally only required if running on a Windows 2003 server.
Make sure default Service Manager reports are used for testing. Faults in customized reports can give similar error message to incorrect configuration, and can hide the fact that this configuration options works.
1.Set AspCompat="false" in the file (installation folder)\website\reports\reportgenerator.aspx.
2.Turn on Sage 300 .NET/COM printing, by updating the <appSettings> in vmep\web.config with the following settings exactly (capitals must match), but replace LOGIN and PASSWORD with one of your Sage 300 usernames and password.
<add key="COMReports" value="true"/>
<add key="COMReportsUser" value="LOGIN"/>
<add key="COMReportsPassword" value="PASSWORD"/>