Then, go back to Apple's App Store application and click on the download icon to install NeoOffice. Drag the NeoOffice application in that Finder window to the Trash, and empty the Trash. To fix this problem, open a Finder window and go to the /Applications folder. If Apple's App Store application displays a dialog that says that NeoOffice is already installed, then you have an old version of NeoOffice Professional Edition or Classic Edition installed on your machine. Step 2 - If NeoOffice cannot save, try these steps

If the NeoOffice download or installation fails, we recommend that you try these steps.

Neither Apple's Java nor Oracle's Java SE Runtime Environment (JRE) will work. Note: only Oracle's JDK 8 will work with NeoOffice 2017 Professional Edition. If NeoOffice displays a dialog that says Java is required, install Java SE Development Kit (JDK) 8 from Oracle.

Optional: Some database features and wizards in NeoOffice Professional Edition require Java.

Install NeoOffice 2017.33 Professional Edition if you are running an older version of NeoOffice.

If NeoOffice does not launch or NeoOffice Viewer launches, we recommend that you try these steps.

macOS Sierra and High Sierra users: Install this patch to open PDF files and install extensions that worked in previous versions of NeoOffice 2017.

Ensure that Apple's App Store application has installed NeoOffice 2017.33 by launching Apple's App Store application and doing these steps.

To upgrade to the latest version of NeoOffice 2017, use the following steps: Only NeoOffice 2017 will run on High Sierra, Mojave, Catalina, Big Sur, and Monterey. Silicon Mac users: Run NeoOffice natively on both Silicon and Intel Macs by installing NeoOffice 2022 Step 1 - Download and install the latest version of NeoOffice

How to upgrade to catalina from sierra