Hi. I am testing a Pharo image from here: https://pharo-ic.lille.inria.fr/hudson/job/Pharo%201.2/lastSuccessfulBuild/a... and the Mac host menu doesn't appear at all. I checked with SmalltalkImage current listLoadedModules SmalltalkImage current listBuiltinModules and MacMenubarPlugin is included. However, evaluating "HostSystemMenusMacOSX new " will throw a 'primDeleteMenu: failed' Why the image doesn't throw any error??? Look in HostSystemMenus >> startUp: resuming resuming ifFalse: [^self]. self clearDefault. [self setDefaultMenuProxyClass] ifError: []. So....indeed, setDefaultMenuProxyClass is throwing an error...but we are puting it under the carpet. Anyway, does someone know why this is not working in Cog? because In the standard VM in works perfect. Cheers Mariano