(Please start new threads for new issues — the thread you posted to isn't related. I've moved this to a new thread.)

[JavaScript Error: "This command is not available because no document is open. [getDocument:\vboxsvr\adomas\zotero\word-for-windows-integration\build\zoterowinwordintegration\document.cpp]"]"

If this is happening only in an existing document, see Troubleshooting Errors in Word Processor Documents (particularly the part about OneDrive).

If it's happening even in new documents, try restarting your computer.