Copy the spreadsheets from iCloud to the hard drive, and then export each one into the ‘09 format. Nonetheless, the most tenable solution is to export all the spreadsheets to the ‘09 or the latest format. The root of the matter is that the newer version of Numbers is unable to open a version of the spreadsheet which the older Numbers version can easily open. How to open Numbers file as normal? Another way around this issue is to explore the 'browse all versions' option, which allows the user to have access to all versions of the Numbers file which should be obtainable via iCloud. However, a Mac OS Numbers update as a solution is completely ruled out here, since the update itself might be responsible for the problem in the first place. The next possible solution is to uninstall and then reinstall macOS 10.14 numbers. The first thing to do is to reboot the device in Safe Mode in order to determine whether there is a newly installed app or login item that has a hand in the issue. There are a number of ways to recover numbers spreadsheet in the face of such an error message. Apparently, any MacOS updates also bring about updates to iWork apps, including Numbers. This issue might also occur after a Mac user download numbers for macOS 10.14 update.

Microsoft Excel for macOS 10.14 Crashes.

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macOS 10.14 Update Not Showing on App Store.

Alternatives to Adobe Acrobat for macOS 10.14.

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Edit Photos with Preview in macOS 10.14.Method to Back Up Data on Mac before Updating into 10.14.

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