Far as i can tell they just didn't bother to test whether it actually worked on the emulator. Tried all the above on top of which I uninstalled the app from the emulator but that just caused it to loop waiting for the companion app to start rather than installing the newer version. Has anyone else experienced this and has any ideas for me? Thanks very much for your help.I also ran into the same problem today. I have tried restarting, uninstalling and reinstalling and am running it from my admin account. So basically I have re-ran the newest version of the setup, tried running the emulator as normal and then connecting to it, however it just says 'now the companion will be updated, click OK to update' and nothing happens after that! I am stuck in an endless loop where this will not update. Hi all, sorry to keep this thread going! Appinventor has been working for me on RM CC4 for the past few weeks, but it seems they have decided to update the software (yesterday) and it won't work unless you update it! There is a link here for more info Time to Update the Companion Explore MIT App Inventor

App inventor 2 emulator mac