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Hello, I am running BS Lifetime Edition on my mac os sierra. BS says that an update is available, so I downloaded the zip file, extracted it in the same location as the older one(2.7.1). When I launch BS it shows only a menu with Bootstrap button that expands when clicked and shows QUIT @QUIT. How to fix this please. Thank you

Contact support, that would be a better way to get support for this as this is a technical issue with the software it sounds like. Try uninstalling it and reinstalling it as well and see if it will work then.

Thank you, I managed to fix it by renaming a bsStusio folder in Application Support to bsStudio_backup >>> reinstalling and launched properly. Thank you