I have an up-to-date patched Win 7 system. Got a message to upgrade KeePass to v. 2.39.1. Did so without incident. Got another message to update KeePass RPC. Downloaded, placed in Plugins subdirectory, and got a message "The fllowing plugin is incompatible with the current KeePass version: [path to plgx file]. Have a screen shot showing details but can’t see how to attach to this post.
I have uninstalled and reinstalled KeePass, restarted system, etc., and get the same message. KeePass seems to work in Chrome browser, but not in Firefox.