For anyone having problems installing the Docx4j Helper AddIn since the code signing certificate expired, here is a freshly signed installer: https://www.docx4java.org/docx4j/Docx4j ... -2-1-1.exe
Lesson for next time: apply for a new code signing certificate well in advance of the expiration of the previous one!
Functionality wise, this is identical to the previous release, so no need to update if you have that installed already. The blurb below is ...