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Home > Success Center > Orion Platform > Orion - Knowledgebase Articles > Error displays when generating a report

Error displays when generating a report

Updated: November 20, 2018


When you schedule a report, the report fails and generates the following error: 

ERROR ReportingLogger - (null) Error during fetching url: https://HOSTNAME:443/Orion/Report.aspx?ReportID=1 using PDF type
System.ArgumentNullException: Value cannot be null.


On the View Report page, the Export to PDF button is functional (which was depreciated in NPM 12.2). However, when you use the Report Schedule, it always fails, no matter what report is used with the same error.


When you check the  Orion Core Business Layer log file located at: (C:\ProgramData\SolarWinds\Logs\Orion\Core.BusinessLayer.log), the following error displays in the log:


INFO SolarWinds.Orion.Security.ProcessRunner - (null) stderr: 
Unhandled Exception: System.TypeInitializationException: The type initializer for 'EO.Pdf.Runtime' threw an exception. ---> System.IO.FileNotFoundException: Could not load file or assembly 'EO.Base, Version=, Culture=neutral, PublicKeyToken=e92353a6bf73fffc' or one of its dependencies. The system cannot find the file specified.
at EO.Pdf.Runtime..cctor()
--- End of inner exception stack trace ---
at EO.Pdf.Runtime.AddLicense(String license)
at ExportToPdfCmd.HTMLExporter.Export(Dictionary`2 parameters)
at ExportToPdfCmd.Program.Main(String[]args


  • CORE 2016.X
  • CORE 2017.X


Missing DLL files - Usually related to Permission or 3rd party software (such as Anti Virus). In this case, Two files were missing in the Program Files directory that should have been there.


  1. Navigate to:
  2. Copy all eo files to:
    c:\Program Files (x86)\SolarWinds\Orion\



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