Plogue Bidule does not recognize oxefmsynth on MacBook Pro

[3261Lee]

Dear programmer, Greetings. The demos posted on YouTube for this program are simply amazing. I have downloaded oxefmsynth.vst to my Apple MacBook Pro, which is equipped with OS X 10.11.6 El Capitan operating system. I am using Plogue Bidule version 0.9752 as the host program. I have had no problem using Bidule as a host for other softsynths. Bidule does not recognize oxefmsynth.vst, even though it is located in the same folder as are the other softsynths. (~Library/Audio/Plug-Ins/VST). I am new to the Apple operating system. My skills at computer programming are insufficient to solve this problem by myself. Any suggestions or assistance would be greatly appreciated. Thank you. 3261Lee