Can't install Word 2011 add-in on Mac High Sierra Report ID: 1353285883

The following error message is displayed when I try to install the Word add-in:

Installation could not be completed because an error occurred.

[Exception... "The operation couldn't be completed. (OSStatus error -60008.) @[performAuthorizedAction:install.m:514]" nsresult: "0x80004005 (NS_ERROR_FAILURE)" location: "JS frame :: file:///Applications/ :: checkStatus :: line 213" data: no]

Steps to reproduce:
1. Start Zotero
2. Open Preferences > Cite > Word Processors
3. Click Install Microsoft Word Add-in
  • The file couldn't be opened because there is no such file.
    See my request here and post to that thread with the results.
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