Graphic EQ display is built into the Imon shell that needs to be running for the display to work in MC, no? That said, I go into the Imon settings, and graphic EQ is switched on, but doesn't show on the display. No biggie, as I prefer to see the title/artist/year/time/remaining time scroll that's setup within the MC plugin.
Also, if I remember right (it's been a while) I was able to use the packaged installation for MC17 (or was it 18?) to get it working in 19. It's the EXE package, not the zip. I believe the problem is that the install is hard coded to a default directory, which is whatever version MC was on when the plugin was packaged. It DID install to the older version's directory, and I just moved that plugin folder to the new MC version's plugin folder. Maybe the solution would be to simply allow the user to select their own installation folder when running the setup.
Anyway, works fine in MC19 here anyway, running Windows 8 Pro. The tricky part MAY be setting access options as W8 can be a real PITA due to new security issues when it comes to user rights. Even my ADMIN account makes me jump through hoops to get into the program directories. Seems to be more of a problem with MC though, so maybe that could be tweaked to allow us to get at our folders already!
PS ... once again, if memory serves, I'd already deleted the older MC directory - the plugin setup, recreated a blank MC directory AND the plugin directory during the installation. That got deleted as well after moving the plugin folder to the new version MC.