Hello everyone.

I understand how important it is to resolve this issue, especially if you're having trouble opening the company file. Let me explain to you some information about installing QuickBooks Desktop 2019 for Mac on a new MacOS computer.

Keep in mind that QuickBooks Desktop 2019 is no longer supported, it may or may not be fully optimized or compatible with the Sonoma MacOS, which could be causing the crashes you're experiencing. This is because as new operating systems are released, our product developers and engineers focus their updates and optimizations on the most recent versions.

In this case, I recommend considering upgrading to a newer version of QuickBooks Desktop that is compatible with Sonoma MacOS. The newer versions often include bug fixes, stability improvements, and support for the latest operating systems. If you're interested to know more about the new features in the recent version, see this link: What's new in QuickBooks Mac Plus 2023.

Feel free to let me know if you have other QuickBooks Desktop Mac concerns. Keep safe!