[Garmin Communicator Plugin NOT detected]

I am using Chrome 43 in Windows 8.1. When I click on "Send to my GPS", I get a "Garmin Communicator Plugin NOT detected". I installed the latest version and enabled NPAPI in Chrome. I get the same issue in Firefox but it works in IE.

Anyone knows why it doesn't work in those two browsers?

I got in touch with Garmin. They say Firefox and Chrome no longer support plugins!