You have unearthed a bug, which has been reported and should be fixed shortly. You can report it as well... https://tinyurl.com/2jy2s72b
In the interim, install this release and see if that solves the issue. Ignore any virus warnings.
There's never a mandate to update; purchased versions do not expire. But newer releases can always be test driven - licensed or not. Retain your paid installer and registration info.