When attempting to insert a citation into Word under Mojave, the user is returned to the EndNote library.
On some machines with Mojave, attempting to use the EndNote CWYW tools may result in returning to the EndNote library, or an Error message.
Mojave includes new Security & Privacy functions which can prevent EndNote from being able to correctly automate. To correctly set these options...
1) Go into the Apple menu
2) Click System Preferences
3) Click Security & Privacy
4) Click the Privacy tab (along the top)
5) Click the Automation options, along the left.
6) Here, make sure that both "Microsoft Word" and "EndNote X#" are both turned on.
7) Close and restart EndNote and Word.
With this automation turned off, the Cite While You Write functions will not work.