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Spirent Velocity: Why do we get "TclParseException" when running certain tests over Velocity agent as a service?

Environment/Versions
  • Windows 7
  • Velocity Agent as a Service (not over Command Prompt)
  • Test cases involve reading Spreadsheet files, reading files through tcl session.
Answer
  • This issue is caused due to a Windows OS limitation: Services cannot run GUI applications.
  • As a result, the Velocity Agent as a Service is unable to run test cases which have GUI components, such as reading Spreadsheets.
  • In order to avoid this error, run the Velocity Agent as an independent process over Windows Command Prompt.

Product : Velocity