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This is a operating system setting. It looks like you're trying to set the default text editor for the OpenStudio SketchUp Plugin not which program opens the ERR file after an EnergyPlus simulation in the OpenStudio application.

On a Windows 7 machine it can be done the following ways.

  1. Control Panel > Default Programs > Associate a file type or protocol with a program
  • Find the .err extension in the list, double click on it, and browse to the text editor executable file (.exe)
  1. Right click on the ERR file
  • Open with > Choose default program
  • Browse to the EXE file

This is a operating system setting. It looks like you're trying to set the default text editor for the OpenStudio SketchUp Plugin not which program opens the ERR file after an EnergyPlus simulation in the OpenStudio application.

On a Windows 7 machine it can be done the following ways.

  1. Control Panel > Default Programs > Associate a file type or protocol with a program

  • Find the .err extension in the list, double click on it, and browse to the text editor executable file (.exe)
  1. Right click on the ERR file

  • Open with > Choose default program
  • Browse to the EXE file