Ok, i just found that it has never been mentioned anywhere before, but MCM has a 128 Menu items limit.   I noticed some menu was missing in MCM, so i i went in console and launched the command "setstage SKI_ConfigManagerInstance 1" and a message told me that 128 menus were loaded. But some menus where still missing. I added some more plugins with MCM Menus but even launching the console command to refresh MCM, it still blocked at 128.   So, it seems i reached the hard cap on it.   If anyon