Some Mac users may be experiencing the error message "Upgrade Failed" when attempting to play Roblox by clicking on the app. To correct this issue, please go to your web browser and click Play instead from the game's details page instead. This will install the most recent version of the Roblox player on your system and allow you to continue playing.
If the above does not remedy the problem, please click here to try some general Mac troubleshooting.
For more information on technical related matters, please see the following links: