DrObb,
You need to install and register NiReports.dll. If you are using a version of InstallShield that generates Windows Installer (.msi) installers, there is a merge module (.msm) on your MeasurementStudio CD to install NIReports. The .msm is Redist\MeasurementStudio\MSMs\NIReports.msm. Otherwise, you can copy the dll from its default install location in Program Files\National Instruments\Shared\NI-Reports and register it on the target computer using regsvr32. Check the InstallShield documentation on how to have the file registered by regsvr32 in your installer.
Hope that helps.
TonyH
Measurement Studio