I'm unfortunately having the exact same problem with the vst2 version. I've extracted the GuyEngine 1.0.4 VST2 .zip folder into the C:\Program Files\VSTPlugins folder which didn't work. I've also tried the C:\Program Files\Common Files\VST2\ folder which also didn't work. I should also note that there are functional plugins that exist in both of these folders, so I just really have no idea why GuyEngine won't appear in my library. If you have any other ideas on what I can try, please let me know. I really would love to use this plugin!! Thanks.