Big Business now automatically blocks any operating system (OS) that is a problem. This protects you from unplanned system changes that could cause data loss. You can turn this feature Off if needed.
To Disable Block OS:
1. Go to the Company card to the Advanced tab.
2. Click the checkbox for Disable Block OS.
3. Click OK to save changes.
Block OS was added in Big Business 12.24 to prevent Big Business from running on macOS Big Sur where it is NOT compatible. When Big Business 12 runs on macOS Big Sur it crashes which can cause data loss. This feature stops it from running as pictured.