If the client doesn't use WIRIS, the script will attempt to install it anyway (fixed in 2002 release). For addressing this in this If the target is this release, please follow one of these two workarounds:
1. Once downloaded ExamDeveloper repository, navigate to the folder corresponding with the release the client wants to upgrade.
2. Navigate to the "Web" folder.
3. Open Setup.ps1 file with a notepad
4. Remove the following line: UnzipAndReplace -zipfile .\WIRISEditor.zip -outpath $properties.WIRIS_EDITOR_TARGET_DIR